64476867457 has 12 divisors (see below), whose sum is σ = 65753169664. Its totient is φ = 63224899920.

The previous prime is 64476867437. The next prime is 64476867463. The reversal of 64476867457 is 75476867446.

It is a happy number.

64476867457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-64476867457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64476867437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6014332 + ... + 6025042.

Almost surely, 2^64476867457 is an apocalyptic number.

It is an amenable number.

64476867457 is a deficient number, since it is larger than the sum of its proper divisors (1276302207).

64476867457 is a wasteful number, since it uses less digits than its factorization.

64476867457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12960 (or 12907 counting only the distinct ones).

The product of its digits is 189665280, while the sum is 64.

The spelling of 64476867457 in words is "sixty-four billion, four hundred seventy-six million, eight hundred sixty-seven thousand, four hundred fifty-seven".