64474190523 has 24 divisors (see below), whose sum is σ = 95719721760. Its totient is φ = 41803090560.

The previous prime is 64474190513. The next prime is 64474190581. The reversal of 64474190523 is 32509147446.

64474190523 is a `hidden beast` number, since 6 + 44 + 74 + 19 + 0 + 523 = 666.

It is not a de Polignac number, because 64474190523 - 2⁸ = 64474190267 is a prime.

It is a super-2 number, since 2×64474190523² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64474190513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 610911 + ... + 708632.

It is an arithmetic number, because the mean of its divisors is an integer number (3988321740).

Almost surely, 2^64474190523 is an apocalyptic number.

64474190523 is a deficient number, since it is larger than the sum of its proper divisors (31245531237).

64474190523 is a wasteful number, since it uses less digits than its factorization.

64474190523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319699 (or 1319696 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 64474190523 in words is "sixty-four billion, four hundred seventy-four million, one hundred ninety thousand, five hundred twenty-three".