72978309602 has 16 divisors (see below), whose sum is σ = 122646595392. Its totient is φ = 32275419120.

The previous prime is 72978309587. The next prime is 72978309629. The reversal of 72978309602 is 20690387927.

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 7 ways as a sum of consecutive naturals, for example, 44826158 + ... + 44827785.

It is an arithmetic number, because the mean of its divisors is an integer number (7665412212).

Almost surely, 2^72978309602 is an apocalyptic number.

72978309602 is a deficient number, since it is larger than the sum of its proper divisors (49668285790).

72978309602 is a wasteful number, since it uses less digits than its factorization.

72978309602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89653993.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 72978309602 in words is "seventy-two billion, nine hundred seventy-eight million, three hundred nine thousand, six hundred two".