72618335052 has 24 divisors (see below), whose sum is σ = 169598693376. Its totient is φ = 24183838608.

The previous prime is 72618335033. The next prime is 72618335059. The reversal of 72618335052 is 25053381627.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72618334995 and 72618335013.

It is not an unprimeable number, because it can be changed into a prime (72618335059) 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, 2770548 + ... + 2796635.

It is an arithmetic number, because the mean of its divisors is an integer number (7066612224).

Almost surely, 2^72618335052 is an apocalyptic number.

It is an amenable number.

72618335052 is an abundant number, since it is smaller than the sum of its proper divisors (96980358324).

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

72618335052 is a wasteful number, since it uses less digits than its factorization.

72618335052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5568277 (or 5568275 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 72618335052 in words is "seventy-two billion, six hundred eighteen million, three hundred thirty-five thousand, fifty-two".