72646247336624 has 60 divisors (see below), whose sum is σ = 152424907462800. Its totient is φ = 33526206934272.

The previous prime is 72646247336573. The next prime is 72646247336629. The reversal of 72646247336624 is 42663374264627.

It is a happy number.

It is a super-2 number, since 2×72646247336624² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72646247336629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31073957 + ... + 33329915.

It is an arithmetic number, because the mean of its divisors is an integer number (2540415124380).

Almost surely, 2^{72646247336624} is an apocalyptic number.

It is an amenable number.

72646247336624 is an abundant number, since it is smaller than the sum of its proper divisors (79778660126176).

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

72646247336624 is a wasteful number, since it uses less digits than its factorization.

72646247336624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267902 (or 2267883 counting only the distinct ones).

The product of its digits is 292626432, while the sum is 62.

The spelling of 72646247336624 in words is "seventy-two trillion, six hundred forty-six billion, two hundred forty-seven million, three hundred thirty-six thousand, six hundred twenty-four".