15954680680 has 16 divisors (see below), whose sum is σ = 35898031620. Its totient is φ = 6381872256.

The previous prime is 15954680671. The next prime is 15954680711. The reversal of 15954680680 is 8608645951.

It can be written as a sum of positive squares in 2 ways, for example, as 15814068516 + 140612164 = 125754^2 + 11858^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199433469 + ... + 199433548.

Almost surely, 2^15954680680 is an apocalyptic number.

15954680680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15954680680 is an abundant number, since it is smaller than the sum of its proper divisors (19943350940).

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

15954680680 is a wasteful number, since it uses less digits than its factorization.

15954680680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398867028 (or 398867024 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 52.

The spelling of 15954680680 in words is "fifteen billion, nine hundred fifty-four million, six hundred eighty thousand, six hundred eighty".