18877099680 has 96 divisors (see below), whose sum is σ = 66069864000. Its totient is φ = 5033892096.

The previous prime is 18877099673. The next prime is 18877099687. The reversal of 18877099680 is 8699077881.

It is an interprime number because it is at equal distance from previous prime (18877099673) and next prime (18877099687).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×18877099680² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18877099687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2180530 + ... + 2189169.

It is an arithmetic number, because the mean of its divisors is an integer number (688227750).

Almost surely, 2^18877099680 is an apocalyptic number.

18877099680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18877099680 is an abundant number, since it is smaller than the sum of its proper divisors (47192764320).

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

18877099680 is a wasteful number, since it uses less digits than its factorization.

18877099680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4369723 (or 4369709 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 63.

The spelling of 18877099680 in words is "eighteen billion, eight hundred seventy-seven million, ninety-nine thousand, six hundred eighty".