15499999999952 has 20 divisors (see below), whose sum is σ = 32341346154180. Its totient is φ = 7153846153728.

The previous prime is 15499999999931. The next prime is 15499999999973. The reversal of 15499999999952 is 25999999999451.

It is an interprime number because it is at equal distance from previous prime (15499999999931) and next prime (15499999999973).

It can be written as a sum of positive squares in 2 ways, for example, as 8046095326096 + 7453904673856 = 2836564^2 + 2730184^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37259615177 + ... + 37259615592.

It is an arithmetic number, because the mean of its divisors is an integer number (1617067307709).

Almost surely, 2^{15499999999952} is an apocalyptic number.

It is an amenable number.

15499999999952 is an abundant number, since it is smaller than the sum of its proper divisors (16841346154228).

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

15499999999952 is a wasteful number, since it uses less digits than its factorization.

15499999999952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74519230790 (or 74519230784 counting only the distinct ones).

The product of its digits is 77484097800, while the sum is 98.

The spelling of 15499999999952 in words is "fifteen trillion, four hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty-two".