71896718838 has 16 divisors (see below), whose sum is σ = 164335357440. Its totient is φ = 20541919656.

The previous prime is 71896718819. The next prime is 71896718843. The reversal of 71896718838 is 83881769817.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 855913278 + ... + 855913361.

It is an arithmetic number, because the mean of its divisors is an integer number (10270959840).

Almost surely, 2^71896718838 is an apocalyptic number.

71896718838 is an abundant number, since it is smaller than the sum of its proper divisors (92438638602).

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

71896718838 is a wasteful number, since it uses less digits than its factorization.

71896718838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711826651.

The product of its digits is 32514048, while the sum is 66.

The spelling of 71896718838 in words is "seventy-one billion, eight hundred ninety-six million, seven hundred eighteen thousand, eight hundred thirty-eight".