18915514680 has 64 divisors (see below), whose sum is σ = 56765383200. Its totient is φ = 5042462720.

The previous prime is 18915514633. The next prime is 18915514721. The reversal of 18915514680 is 8641551981.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 360520 + ... + 409640.

Almost surely, 2^18915514680 is an apocalyptic number.

18915514680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18915514680 is an abundant number, since it is smaller than the sum of its proper divisors (37849868520).

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

18915514680 is a wasteful number, since it uses less digits than its factorization.

18915514680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52344 (or 52340 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 48.

The spelling of 18915514680 in words is "eighteen billion, nine hundred fifteen million, five hundred fourteen thousand, six hundred eighty".