64143686064574 has 16 divisors (see below), whose sum is σ = 99847291183200. Its totient is φ = 30868233119584.

The previous prime is 64143686064553. The next prime is 64143686064593. The reversal of 64143686064574 is 47546068634146.

It is a happy number.

It is a super-2 number, since 2×64143686064574² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1744343794 + ... + 1744380565.

It is an arithmetic number, because the mean of its divisors is an integer number (6240455698950).

Almost surely, 2^{64143686064574} is an apocalyptic number.

64143686064574 is a deficient number, since it is larger than the sum of its proper divisors (35703605118626).

64143686064574 is a wasteful number, since it uses less digits than its factorization.

64143686064574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3488724707.

The product of its (nonzero) digits is 278691840, while the sum is 64.

The spelling of 64143686064574 in words is "sixty-four trillion, one hundred forty-three billion, six hundred eighty-six million, sixty-four thousand, five hundred seventy-four".