72450535244 has 6 divisors (see below), whose sum is σ = 126788436684. Its totient is φ = 36225267620.

The previous prime is 72450535231. The next prime is 72450535249. The reversal of 72450535244 is 44253505427.

It is a super-2 number, since 2×72450535244² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72450535249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9056316902 + ... + 9056316909.

It is an arithmetic number, because the mean of its divisors is an integer number (21131406114).

Almost surely, 2^72450535244 is an apocalyptic number.

It is an amenable number.

72450535244 is a deficient number, since it is larger than the sum of its proper divisors (54337901440).

72450535244 is a wasteful number, since it uses less digits than its factorization.

72450535244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18112633815 (or 18112633813 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 41.

The spelling of 72450535244 in words is "seventy-two billion, four hundred fifty million, five hundred thirty-five thousand, two hundred forty-four".