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10205442441531 = 321381821099239
BaseRepresentation
bin1001010010000010001111…
…0001011000000100111011
31100010122000211102121120100
42110200203301120010323
52314201221231112111
633412152053330443
72102214243314631
oct224404361300473
940118024377510
1010205442441531
113285116226087
121189a72036a23
135904a4b877ac
14273d35d63351
1512a7010b7756
hex94823c5813b

10205442441531 has 12 divisors (see below), whose sum is σ = 14751868945840. Its totient is φ = 6798701690640.

The previous prime is 10205442441517. The next prime is 10205442441553. The reversal of 10205442441531 is 13514424450201.

10205442441531 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 544 + 24 + 41 + 53 + 1 = 666.

It is not a de Polignac number, because 10205442441531 - 226 = 10205375332667 is a prime.

It is a super-2 number, since 2×102054424415312 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10205442441581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 410537191 + ... + 410562048.

Almost surely, 210205442441531 is an apocalyptic number.

10205442441531 is a deficient number, since it is larger than the sum of its proper divisors (4546426504309).

10205442441531 is a wasteful number, since it uses less digits than its factorization.

10205442441531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821100626 (or 821100623 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 10205442441531 its reverse (13514424450201), we get a palindrome (23719866891732).

The spelling of 10205442441531 in words is "ten trillion, two hundred five billion, four hundred forty-two million, four hundred forty-one thousand, five hundred thirty-one".

Divisors: 1 3 9 1381 4143 12429 821099239 2463297717 7389893151 1133938049059 3401814147177 10205442441531