72943579984 has 30 divisors (see below), whose sum is σ = 155344208810. Its totient is φ = 33156171840.

The previous prime is 72943579949. The next prime is 72943579997. The reversal of 72943579984 is 48997534927.

It can be written as a sum of positive squares in only one way, i.e., 70558234384 + 2385345600 = 265628^2 + 48840^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18836799 + ... + 18840670.

Almost surely, 2^72943579984 is an apocalyptic number.

It is an amenable number.

72943579984 is an abundant number, since it is smaller than the sum of its proper divisors (82400628826).

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

72943579984 is a wasteful number, since it uses less digits than its factorization.

72943579984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37677499 (or 37677482 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 67.

The spelling of 72943579984 in words is "seventy-two billion, nine hundred forty-three million, five hundred seventy-nine thousand, nine hundred eighty-four".