15105431652 has 12 divisors (see below), whose sum is σ = 35246007216. Its totient is φ = 5035143880.

The previous prime is 15105431641. The next prime is 15105431657. The reversal of 15105431652 is 25613450151.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (15105431657) 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, 629392974 + ... + 629392997.

It is an arithmetic number, because the mean of its divisors is an integer number (2937167268).

Almost surely, 2^15105431652 is an apocalyptic number.

15105431652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15105431652 is an abundant number, since it is smaller than the sum of its proper divisors (20140575564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15105431652 is a wasteful number, since it uses less digits than its factorization.

15105431652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258785978 (or 1258785976 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 15105431652 in words is "fifteen billion, one hundred five million, four hundred thirty-one thousand, six hundred fifty-two".