72463960818 has 54 divisors (see below), whose sum is σ = 159552067311. Its totient is φ = 23769010584.

The previous prime is 72463960817. The next prime is 72463960837. The reversal of 72463960818 is 81806936427.

72463960818 is a `hidden beast` number, since 7 + 24 + 6 + 3 + 9 + 608 + 1 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36231980409 + 36231980409 = 190347^2 + 190347^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=190347.

It is not an unprimeable number, because it can be changed into a prime (72463960817) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 76519021 + ... + 76519967.

Almost surely, 2^72463960818 is an apocalyptic number.

72463960818 is an abundant number, since it is smaller than the sum of its proper divisors (87088106493).

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

72463960818 is an frugal number, since it uses more digits than its factorization.

72463960818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

It can be divided in two parts, 7246 and 3960818, that added together give a square (3968064 = 1992²).

The spelling of 72463960818 in words is "seventy-two billion, four hundred sixty-three million, nine hundred sixty thousand, eight hundred eighteen".