18685077012 has 72 divisors (see below), whose sum is σ = 54009236736. Its totient is φ = 5335614144.

The previous prime is 18685076933. The next prime is 18685077023. The reversal of 18685077012 is 21077058681.

It is a happy number.

18685077012 is a `hidden beast` number, since 1 + 8 + 68 + 507 + 70 + 12 = 666.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 453253 + ... + 492755.

It is an arithmetic number, because the mean of its divisors is an integer number (750128288).

Almost surely, 2^18685077012 is an apocalyptic number.

18685077012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18685077012 is an abundant number, since it is smaller than the sum of its proper divisors (35324159724).

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

18685077012 is a wasteful number, since it uses less digits than its factorization.

18685077012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41397 (or 41392 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The spelling of 18685077012 in words is "eighteen billion, six hundred eighty-five million, seventy-seven thousand, twelve".