72754791388 has 6 divisors (see below), whose sum is σ = 127320884936. Its totient is φ = 36377395692.

The previous prime is 72754791349. The next prime is 72754791391. The reversal of 72754791388 is 88319745727.

It is a super-2 number, since 2×72754791388² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9094348920 + ... + 9094348927.

Almost surely, 2^72754791388 is an apocalyptic number.

It is an amenable number.

72754791388 is a deficient number, since it is larger than the sum of its proper divisors (54566093548).

72754791388 is a wasteful number, since it uses less digits than its factorization.

72754791388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18188697851 (or 18188697849 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 61.

The spelling of 72754791388 in words is "seventy-two billion, seven hundred fifty-four million, seven hundred ninety-one thousand, three hundred eighty-eight".