15551866160 has 60 divisors (see below), whose sum is σ = 36305716464. Its totient is φ = 6195450240.

The previous prime is 15551866157. The next prime is 15551866171. The reversal of 15551866160 is 6166815551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5873957 + ... + 5876603.

Almost surely, 2^15551866160 is an apocalyptic number.

15551866160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15551866160 is an abundant number, since it is smaller than the sum of its proper divisors (20753850304).

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

15551866160 is an equidigital number, since it uses as much as digits as its factorization.

15551866160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202 (or 2925 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 44.

The spelling of 15551866160 in words is "fifteen billion, five hundred fifty-one million, eight hundred sixty-six thousand, one hundred sixty".