72644330852 has 24 divisors (see below), whose sum is σ = 128021677056. Its totient is φ = 36067560768.

The previous prime is 72644330851. The next prime is 72644330917. The reversal of 72644330852 is 25803344627.

It is not an unprimeable number, because it can be changed into a prime (72644330851) 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, 235853 + ... + 448235.

It is an arithmetic number, because the mean of its divisors is an integer number (5334236544).

Almost surely, 2^72644330852 is an apocalyptic number.

It is an amenable number.

72644330852 is a deficient number, since it is larger than the sum of its proper divisors (55377346204).

72644330852 is a wasteful number, since it uses less digits than its factorization.

72644330852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212987 (or 212985 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 72644330852 in words is "seventy-two billion, six hundred forty-four million, three hundred thirty thousand, eight hundred fifty-two".