15745397880 has 32 divisors (see below), whose sum is σ = 47236194000. Its totient is φ = 4198772736.

The previous prime is 15745397851. The next prime is 15745397933. The reversal of 15745397880 is 8879354751.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 15745397880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65605705 + ... + 65605944.

Almost surely, 2^15745397880 is an apocalyptic number.

15745397880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15745397880 is an abundant number, since it is smaller than the sum of its proper divisors (31490796120).

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

15745397880 is a wasteful number, since it uses less digits than its factorization.

15745397880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131211663 (or 131211659 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 57.

The spelling of 15745397880 in words is "fifteen billion, seven hundred forty-five million, three hundred ninety-seven thousand, eight hundred eighty".