72669617632 has 24 divisors (see below), whose sum is σ = 143519649336. Its totient is φ = 36220182912.

The previous prime is 72669617599. The next prime is 72669617641. The reversal of 72669617632 is 23671696627.

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 3 ways as a sum of consecutive naturals, for example, 3571758 + ... + 3592045.

It is an arithmetic number, because the mean of its divisors is an integer number (5979985389).

Almost surely, 2^72669617632 is an apocalyptic number.

It is an amenable number.

72669617632 is a deficient number, since it is larger than the sum of its proper divisors (70850031704).

72669617632 is a wasteful number, since it uses less digits than its factorization.

72669617632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164130 (or 7164122 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 55.

The spelling of 72669617632 in words is "seventy-two billion, six hundred sixty-nine million, six hundred seventeen thousand, six hundred thirty-two".