71314573644 has 36 divisors (see below), whose sum is σ = 180561524416. Its totient is φ = 23732738208.

The previous prime is 71314573613. The next prime is 71314573661. The reversal of 71314573644 is 44637541317.

71314573644 is a `hidden beast` number, since 7 + 1 + 3 + 14 + 573 + 64 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 71314573644.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1593724 + ... + 1637859.

Almost surely, 2^71314573644 is an apocalyptic number.

It is an amenable number.

71314573644 is an abundant number, since it is smaller than the sum of its proper divisors (109246950772).

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

71314573644 is a wasteful number, since it uses less digits than its factorization.

71314573644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232206 (or 3232201 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The spelling of 71314573644 in words is "seventy-one billion, three hundred fourteen million, five hundred seventy-three thousand, six hundred forty-four".