71577051564 has 24 divisors (see below), whose sum is σ = 167043298240. Its totient is φ = 23854706064.

The previous prime is 71577051521. The next prime is 71577051569. The reversal of 71577051564 is 46515077517.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (71577051569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469354 + ... + 602865.

Almost surely, 2^71577051564 is an apocalyptic number.

It is an amenable number.

71577051564 is an abundant number, since it is smaller than the sum of its proper divisors (95466246676).

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

71577051564 is a wasteful number, since it uses less digits than its factorization.

71577051564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077789 (or 1077787 counting only the distinct ones).

The product of its (nonzero) digits is 1029000, while the sum is 48.

The spelling of 71577051564 in words is "seventy-one billion, five hundred seventy-seven million, fifty-one thousand, five hundred sixty-four".