64476635943 has 16 divisors (see below), whose sum is σ = 87198218496. Its totient is φ = 42369996480.

The previous prime is 64476635929. The next prime is 64476635989. The reversal of 64476635943 is 34953667446.

It is a happy number.

64476635943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64476635943 - 2⁸ = 64476635687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64476635143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1058155 + ... + 1117427.

It is an arithmetic number, because the mean of its divisors is an integer number (5449888656).

Almost surely, 2^64476635943 is an apocalyptic number.

64476635943 is a deficient number, since it is larger than the sum of its proper divisors (22721582553).

64476635943 is a wasteful number, since it uses less digits than its factorization.

64476635943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64454.

The product of its digits is 39191040, while the sum is 57.

The spelling of 64476635943 in words is "sixty-four billion, four hundred seventy-six million, six hundred thirty-five thousand, nine hundred forty-three".