71623890874 has 4 divisors (see below), whose sum is σ = 107435836314. Its totient is φ = 35811945436.

The previous prime is 71623890823. The next prime is 71623890881. The reversal of 71623890874 is 47809832617.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 63784028025 + 7839862849 = 252555^2 + 88543^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17905972717 + ... + 17905972720.

Almost surely, 2^71623890874 is an apocalyptic number.

71623890874 is a deficient number, since it is larger than the sum of its proper divisors (35811945440).

71623890874 is a wasteful number, since it uses less digits than its factorization.

71623890874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35811945439.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 71623890874 in words is "seventy-one billion, six hundred twenty-three million, eight hundred ninety thousand, eight hundred seventy-four".