64662448671 has 12 divisors (see below), whose sum is σ = 96414260800. Its totient is φ = 41717708640.

The previous prime is 64662448651. The next prime is 64662448681. The reversal of 64662448671 is 17684426646.

It is a happy number.

64662448671 is a `hidden beast` number, since 6 + 4 + 6 + 624 + 4 + 8 + 6 + 7 + 1 = 666.

It is not a de Polignac number, because 64662448671 - 2¹⁵ = 64662415903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64662448621) 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, 115882246 + ... + 115882803.

Almost surely, 2^64662448671 is an apocalyptic number.

64662448671 is a deficient number, since it is larger than the sum of its proper divisors (31751812129).

64662448671 is a wasteful number, since it uses less digits than its factorization.

64662448671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231765086 (or 231765083 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The spelling of 64662448671 in words is "sixty-four billion, six hundred sixty-two million, four hundred forty-eight thousand, six hundred seventy-one".