15685680090 has 64 divisors (see below), whose sum is σ = 40169923200. Its totient is φ = 3908404224.

The previous prime is 15685680079. The next prime is 15685680103. The reversal of 15685680090 is 9008658651.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146875 + ... + 230094.

It is an arithmetic number, because the mean of its divisors is an integer number (627655050).

Almost surely, 2^15685680090 is an apocalyptic number.

15685680090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15685680090 is an abundant number, since it is smaller than the sum of its proper divisors (24484243110).

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

15685680090 is a wasteful number, since it uses less digits than its factorization.

15685680090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377071.

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 15685680090 in words is "fifteen billion, six hundred eighty-five million, six hundred eighty thousand, ninety".