64522112531 has 4 divisors (see below), whose sum is σ = 65148540912. Its totient is φ = 63895684152.

The previous prime is 64522112519. The next prime is 64522112533. The reversal of 64522112531 is 13521122546.

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

It is a cyclic number.

It is not a de Polignac number, because 64522112531 - 2¹⁸ = 64521850387 is a prime.

It is a super-2 number, since 2×64522112531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64522112533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313214036 + ... + 313214241.

It is an arithmetic number, because the mean of its divisors is an integer number (16287135228).

Almost surely, 2^64522112531 is an apocalyptic number.

64522112531 is a deficient number, since it is larger than the sum of its proper divisors (626428381).

64522112531 is a wasteful number, since it uses less digits than its factorization.

64522112531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626428380.

The product of its digits is 14400, while the sum is 32.

The spelling of 64522112531 in words is "sixty-four billion, five hundred twenty-two million, one hundred twelve thousand, five hundred thirty-one".