71564535522 has 12 divisors (see below), whose sum is σ = 155056493670. Its totient is φ = 23854845168.

The previous prime is 71564535499. The next prime is 71564535547. The reversal of 71564535522 is 22553546517.

It is a happy number.

71564535522 is a `hidden beast` number, since 7 + 1 + 5 + 64 + 535 + 52 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37538675001 + 34025860521 = 193749^2 + 184461^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1987903747 + ... + 1987903782.

Almost surely, 2^71564535522 is an apocalyptic number.

71564535522 is an abundant number, since it is smaller than the sum of its proper divisors (83491958148).

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

71564535522 is a wasteful number, since it uses less digits than its factorization.

71564535522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975807537 (or 3975807534 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 45.

The spelling of 71564535522 in words is "seventy-one billion, five hundred sixty-four million, five hundred thirty-five thousand, five hundred twenty-two".