18516133040 has 80 divisors (see below), whose sum is σ = 43319370240. Its totient is φ = 7360254720.

The previous prime is 18516132991. The next prime is 18516133067. The reversal of 18516133040 is 4033161581.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 18516132988 and 18516133006.

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, 15811655 + ... + 15812825.

It is an arithmetic number, because the mean of its divisors is an integer number (541492128).

Almost surely, 2^18516133040 is an apocalyptic number.

18516133040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18516133040 is an abundant number, since it is smaller than the sum of its proper divisors (24803237200).

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

18516133040 is a wasteful number, since it uses less digits than its factorization.

18516133040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250 (or 2244 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 18516133040 in words is "eighteen billion, five hundred sixteen million, one hundred thirty-three thousand, forty".