87693779418 has 32 divisors (see below), whose sum is σ = 204707672064. Its totient is φ = 24522272112.

The previous prime is 87693779399. The next prime is 87693779423. The reversal of 87693779418 is 81497739678.

It is a super-2 number, since 2×87693779418² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22210230 + ... + 22214177.

It is an arithmetic number, because the mean of its divisors is an integer number (6397114752).

Almost surely, 2^87693779418 is an apocalyptic number.

87693779418 is an abundant number, since it is smaller than the sum of its proper divisors (117013892646).

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

87693779418 is a wasteful number, since it uses less digits than its factorization.

87693779418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44424466.

The product of its digits is 128024064, while the sum is 69.

The spelling of 87693779418 in words is "eighty-seven billion, six hundred ninety-three million, seven hundred seventy-nine thousand, four hundred eighteen".