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105048539963761 = 1972520272
BaseRepresentation
bin10111111000101010000100…
…111010001010000101110001
3111202221112122100221022010111
4113320222010322022011301
5102232103402212320021
61011230344423101321
731061335514606632
oct2770520472120561
9452845570838114
10105048539963761
1130520921221969
12b94713b5a1841
13468005b63ab54
141bd253b029889
15c228485d28e1
hex5f8a84e8a171

105048539963761 has 9 divisors (see below), whose sum is σ = 105586517548299. Its totient is φ = 104513289777624.

The previous prime is 105048539963749. The next prime is 105048539963767. The reversal of 105048539963761 is 167369935840501.

The square root of 105048539963761 is 10249319.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 102926401920225 + 2122138043536 = 10145265^2 + 1456756^2 .

It is not a de Polignac number, because 105048539963761 - 25 = 105048539963729 is a prime.

It is a super-2 number, since 2×1050485399637612 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105048539963767) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2019089830 + ... + 2019141856.

Almost surely, 2105048539963761 is an apocalyptic number.

105048539963761 is the 10249319-th square number.

105048539963761 is the 5124660-th centered octagonal number.

It is an amenable number.

105048539963761 is a deficient number, since it is larger than the sum of its proper divisors (537977584538).

105048539963761 is an frugal number, since it uses more digits than its factorization.

105048539963761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104448 (or 52224 counting only the distinct ones).

The product of its (nonzero) digits is 146966400, while the sum is 67.

The spelling of 105048539963761 in words is "one hundred five trillion, forty-eight billion, five hundred thirty-nine million, nine hundred sixty-three thousand, seven hundred sixty-one".

Divisors: 1 197 38809 52027 10249319 2019115843 2706808729 533241319613 105048539963761