73971457532 has 24 divisors (see below), whose sum is σ = 148071290976. Its totient is φ = 31674544128.

The previous prime is 73971457523. The next prime is 73971457559. The reversal of 73971457532 is 23575417937.

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, 1113353 + ... + 1177920.

It is an arithmetic number, because the mean of its divisors is an integer number (6169637124).

Almost surely, 2^73971457532 is an apocalyptic number.

It is an amenable number.

73971457532 is an abundant number, since it is smaller than the sum of its proper divisors (74099833444).

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

73971457532 is a wasteful number, since it uses less digits than its factorization.

73971457532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292437 (or 2292435 counting only the distinct ones).

The product of its digits is 5556600, while the sum is 53.

The spelling of 73971457532 in words is "seventy-three billion, nine hundred seventy-one million, four hundred fifty-seven thousand, five hundred thirty-two".