15545116880 has 40 divisors (see below), whose sum is σ = 38268423432. Its totient is φ = 5852278784.

The previous prime is 15545116879. The next prime is 15545116883. The reversal of 15545116880 is 8861154551.

It can be written as a sum of positive squares in 4 ways, for example, as 772172944 + 14772943936 = 27788^2 + 121544^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15545116883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5713757 + ... + 5716476.

Almost surely, 2^15545116880 is an apocalyptic number.

15545116880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15545116880 is an abundant number, since it is smaller than the sum of its proper divisors (22723306552).

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

15545116880 is a wasteful number, since it uses less digits than its factorization.

15545116880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11430263 (or 11430257 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 44.

The spelling of 15545116880 in words is "fifteen billion, five hundred forty-five million, one hundred sixteen thousand, eight hundred eighty".