18362566120 has 32 divisors (see below), whose sum is σ = 43112113920. Its totient is φ = 7025677120.

The previous prime is 18362566111. The next prime is 18362566129. The reversal of 18362566120 is 2166526381.

It is an interprime number because it is at equal distance from previous prime (18362566111) and next prime (18362566129).

It is a super-2 number, since 2×18362566120² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (18362566129) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9978736 + ... + 9980575.

It is an arithmetic number, because the mean of its divisors is an integer number (1347253560).

Almost surely, 2^18362566120 is an apocalyptic number.

18362566120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18362566120 is an abundant number, since it is smaller than the sum of its proper divisors (24749547800).

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

18362566120 is a wasteful number, since it uses less digits than its factorization.

18362566120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19959345 (or 19959341 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 18362566120 in words is "eighteen billion, three hundred sixty-two million, five hundred sixty-six thousand, one hundred twenty".