72388796146 has 16 divisors (see below), whose sum is σ = 109447291800. Its totient is φ = 35907419520.

The previous prime is 72388796063. The next prime is 72388796147. The reversal of 72388796146 is 64169788327.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 70625720025 + 1763076121 = 265755^2 + 41989^2 .

It is not an unprimeable number, because it can be changed into a prime (72388796147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125715 + ... + 400726.

Almost surely, 2^72388796146 is an apocalyptic number.

72388796146 is a deficient number, since it is larger than the sum of its proper divisors (37058495654).

72388796146 is a wasteful number, since it uses less digits than its factorization.

72388796146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526989.

The product of its digits is 24385536, while the sum is 61.

The spelling of 72388796146 in words is "seventy-two billion, three hundred eighty-eight million, seven hundred ninety-six thousand, one hundred forty-six".