64967457408 has 128 divisors (see below), whose sum is σ = 204023664000. Its totient is φ = 17922035712.

The previous prime is 64967457407. The next prime is 64967457409. The reversal of 64967457408 is 80475476946.

It is an interprime number because it is at equal distance from previous prime (64967457407) and next prime (64967457409).

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (64967457407) 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, 338763 + ... + 494666.

It is an arithmetic number, because the mean of its divisors is an integer number (1593934875).

Almost surely, 2^64967457408 is an apocalyptic number.

It is an amenable number.

64967457408 is an abundant number, since it is smaller than the sum of its proper divisors (139056206592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64967457408 is a wasteful number, since it uses less digits than its factorization.

64967457408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833482 (or 833470 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 60.

The spelling of 64967457408 in words is "sixty-four billion, nine hundred sixty-seven million, four hundred fifty-seven thousand, four hundred eight".