72136879970 has 8 divisors (see below), whose sum is σ = 129846383964. Its totient is φ = 28854751984.

The previous prime is 72136879963. The next prime is 72136879981. The reversal of 72136879970 is 7997863127.

It can be written as a sum of positive squares in 2 ways, for example, as 65478156769 + 6658723201 = 255887^2 + 81601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 3606843989 + ... + 3606844008.

Almost surely, 2^72136879970 is an apocalyptic number.

72136879970 is a deficient number, since it is larger than the sum of its proper divisors (57709503994).

72136879970 is a wasteful number, since it uses less digits than its factorization.

72136879970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7213688004.

The product of its (nonzero) digits is 8001504, while the sum is 59.

The spelling of 72136879970 in words is "seventy-two billion, one hundred thirty-six million, eight hundred seventy-nine thousand, nine hundred seventy".