72771802836 has 24 divisors (see below), whose sum is σ = 169805823264. Its totient is φ = 24256560480.

The previous prime is 72771802813. The next prime is 72771802921. The reversal of 72771802836 is 63820817727.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 493771 + ... + 623981.

It is an arithmetic number, because the mean of its divisors is an integer number (7075242636).

Almost surely, 2^72771802836 is an apocalyptic number.

It is an amenable number.

72771802836 is an abundant number, since it is smaller than the sum of its proper divisors (97034020428).

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

72771802836 is a wasteful number, since it uses less digits than its factorization.

72771802836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176791 (or 176789 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 51.

The spelling of 72771802836 in words is "seventy-two billion, seven hundred seventy-one million, eight hundred two thousand, eight hundred thirty-six".