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10155122149 = 10319849779
BaseRepresentation
bin10010111010100101…
…01101110111100101
3222012201122122201011
421131102231313211
5131244202402044
64355403302221
7506440054054
oct113522556745
928181578634
1010155122149
114341335637
121b74b1a971
13c5ab90923
146c49c239b
153e6800134
hex25d4adde5

10155122149 has 4 divisors (see below), whose sum is σ = 10164972960. Its totient is φ = 10145271340.

The previous prime is 10155122137. The next prime is 10155122203. The reversal of 10155122149 is 94122155101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10155122149 - 29 = 10155121637 is a prime.

It is a super-2 number, since 2×101551221492 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10155122149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10155122249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4923859 + ... + 4925920.

It is an arithmetic number, because the mean of its divisors is an integer number (2541243240).

Almost surely, 210155122149 is an apocalyptic number.

It is an amenable number.

10155122149 is a deficient number, since it is larger than the sum of its proper divisors (9850811).

10155122149 is an equidigital number, since it uses as much as digits as its factorization.

10155122149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9850810.

The product of its (nonzero) digits is 3600, while the sum is 31.

The spelling of 10155122149 in words is "ten billion, one hundred fifty-five million, one hundred twenty-two thousand, one hundred forty-nine".

Divisors: 1 1031 9849779 10155122149