73947766872 has 32 divisors (see below), whose sum is σ = 211279334400. Its totient is φ = 21127933344.

The previous prime is 73947766817. The next prime is 73947766883. The reversal of 73947766872 is 27866774937.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220082472 + ... + 220082807.

It is an arithmetic number, because the mean of its divisors is an integer number (6602479200).

Almost surely, 2^73947766872 is an apocalyptic number.

It is an amenable number.

73947766872 is an abundant number, since it is smaller than the sum of its proper divisors (137331567528).

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

73947766872 is a wasteful number, since it uses less digits than its factorization.

73947766872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440165295 (or 440165291 counting only the distinct ones).

The product of its digits is 149361408, while the sum is 66.

The spelling of 73947766872 in words is "seventy-three billion, nine hundred forty-seven million, seven hundred sixty-six thousand, eight hundred seventy-two".