18705152040 has 64 divisors (see below), whose sum is σ = 58555267200. Its totient is φ = 4771168512.

The previous prime is 18705152027. The next prime is 18705152107. The reversal of 18705152040 is 4025150781.

It is a junction number, because it is equal to n+sod(n) for n = 18705151992 and 18705152010.

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 15 ways as a sum of consecutive naturals, for example, 3385855 + ... + 3391374.

It is an arithmetic number, because the mean of its divisors is an integer number (914926050).

Almost surely, 2^18705152040 is an apocalyptic number.

18705152040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18705152040 is an abundant number, since it is smaller than the sum of its proper divisors (39850115160).

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

18705152040 is a wasteful number, since it uses less digits than its factorization.

18705152040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6777266 (or 6777262 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The spelling of 18705152040 in words is "eighteen billion, seven hundred five million, one hundred fifty-two thousand, forty".