72137023884 has 18 divisors (see below), whose sum is σ = 182346366020. Its totient is φ = 24045674616.

The previous prime is 72137023837. The next prime is 72137023939. The reversal of 72137023884 is 48832073127.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1001903074 + ... + 1001903145.

Almost surely, 2^72137023884 is an apocalyptic number.

It is an amenable number.

72137023884 is an abundant number, since it is smaller than the sum of its proper divisors (110209342136).

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

72137023884 is a wasteful number, since it uses less digits than its factorization.

72137023884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003806229 (or 2003806224 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 72137023884 in words is "seventy-two billion, one hundred thirty-seven million, twenty-three thousand, eight hundred eighty-four".