18751036512 has 48 divisors (see below), whose sum is σ = 53007741360. Its totient is φ = 5769549312.

The previous prime is 18751036489. The next prime is 18751036519. The reversal of 18751036512 is 21563015781.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×18751036512² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18751036519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7511187 + ... + 7513682.

It is an arithmetic number, because the mean of its divisors is an integer number (1104327945).

Almost surely, 2^18751036512 is an apocalyptic number.

18751036512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18751036512 is an abundant number, since it is smaller than the sum of its proper divisors (34256704848).

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

18751036512 is a wasteful number, since it uses less digits than its factorization.

18751036512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15024895 (or 15024887 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 18751036512 in words is "eighteen billion, seven hundred fifty-one million, thirty-six thousand, five hundred twelve".