18674720712 has 24 divisors (see below), whose sum is σ = 50577368790. Its totient is φ = 6224906880.

The previous prime is 18674720699. The next prime is 18674720749. The reversal of 18674720712 is 21702747681.

It can be written as a sum of positive squares in only one way, i.e., 17154188676 + 1520532036 = 130974^2 + 38994^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129685489 + ... + 129685632.

Almost surely, 2^18674720712 is an apocalyptic number.

18674720712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18674720712 is an abundant number, since it is smaller than the sum of its proper divisors (31902648078).

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

18674720712 is a wasteful number, since it uses less digits than its factorization.

18674720712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259371133 (or 259371126 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The spelling of 18674720712 in words is "eighteen billion, six hundred seventy-four million, seven hundred twenty thousand, seven hundred twelve".