15487778160 has 120 divisors (see below), whose sum is σ = 52246905984. Its totient is φ = 4111511040.

The previous prime is 15487778153. The next prime is 15487778179. The reversal of 15487778160 is 6187778451.

15487778160 is a `hidden beast` number, since 15 + 487 + 77 + 81 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a junction number, because it is equal to n+sod(n) for n = 15487778097 and 15487778106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112330 + ... + 208790.

Almost surely, 2^15487778160 is an apocalyptic number.

15487778160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15487778160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26123452992).

15487778160 is an abundant number, since it is smaller than the sum of its proper divisors (36759127824).

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

15487778160 is a wasteful number, since it uses less digits than its factorization.

15487778160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96703 (or 96694 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 54.

The spelling of 15487778160 in words is "fifteen billion, four hundred eighty-seven million, seven hundred seventy-eight thousand, one hundred sixty".