73637021612 has 48 divisors (see below), whose sum is σ = 161082335232. Its totient is φ = 28614794880.

The previous prime is 73637021593. The next prime is 73637021621. The reversal of 73637021612 is 21612073637.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194153 + ... + 430080.

It is an arithmetic number, because the mean of its divisors is an integer number (3355881984).

Almost surely, 2^73637021612 is an apocalyptic number.

It is an amenable number.

73637021612 is an abundant number, since it is smaller than the sum of its proper divisors (87445313620).

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

73637021612 is a wasteful number, since it uses less digits than its factorization.

73637021612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624638 (or 624636 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 73637021612 in words is "seventy-three billion, six hundred thirty-seven million, twenty-one thousand, six hundred twelve".