71656647622 has 32 divisors (see below), whose sum is σ = 128109864960. Its totient is φ = 29412944640.

The previous prime is 71656647599. The next prime is 71656647677. The reversal of 71656647622 is 22674665617.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 71656647622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 808972 + ... + 893167.

It is an arithmetic number, because the mean of its divisors is an integer number (4003433280).

Almost surely, 2^71656647622 is an apocalyptic number.

71656647622 is a deficient number, since it is larger than the sum of its proper divisors (56453217338).

71656647622 is a wasteful number, since it uses less digits than its factorization.

71656647622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702276.

The product of its digits is 5080320, while the sum is 52.

The spelling of 71656647622 in words is "seventy-one billion, six hundred fifty-six million, six hundred forty-seven thousand, six hundred twenty-two".