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13315512007 = 72271745143
BaseRepresentation
bin11000110011010101…
…01001011011000111
31021100222111002120101
430121222221123013
5204232232341012
610041141344531
7650653661500
oct143152513307
937328432511
1013315512007
115713294286
1226b7408147
1313428711b5
14904619ba7
1552dec6d57
hex319aa96c7

13315512007 has 6 divisors (see below), whose sum is σ = 15489473208. Its totient is φ = 11413295964.

The previous prime is 13315511981. The next prime is 13315512013. The reversal of 13315512007 is 70021551331.

It is not a de Polignac number, because 13315512007 - 215 = 13315479239 is a prime.

It is a super-2 number, since 2×133155120072 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13315512017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135872523 + ... + 135872620.

It is an arithmetic number, because the mean of its divisors is an integer number (2581578868).

Almost surely, 213315512007 is an apocalyptic number.

13315512007 is a deficient number, since it is larger than the sum of its proper divisors (2173961201).

13315512007 is an equidigital number, since it uses as much as digits as its factorization.

13315512007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271745157 (or 271745150 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 28.

The spelling of 13315512007 in words is "thirteen billion, three hundred fifteen million, five hundred twelve thousand, seven".

Divisors: 1 7 49 271745143 1902216001 13315512007