64462642440464 has 40 divisors (see below), whose sum is σ = 133848988503360. Its totient is φ = 29996717275008.

The previous prime is 64462642440437. The next prime is 64462642440491. The reversal of 64462642440464 is 46404424626446.

It is an interprime number because it is at equal distance from previous prime (64462642440437) and next prime (64462642440491).

It is a super-2 number, since 2×64462642440464² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2367151574 + ... + 2367178805.

It is an arithmetic number, because the mean of its divisors is an integer number (3346224712584).

Almost surely, 2^{64462642440464} is an apocalyptic number.

It is an amenable number.

64462642440464 is an abundant number, since it is smaller than the sum of its proper divisors (69386346062896).

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

64462642440464 is a wasteful number, since it uses less digits than its factorization.

64462642440464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734330447 (or 4734330441 counting only the distinct ones).

The product of its (nonzero) digits is 84934656, while the sum is 56.

The spelling of 64462642440464 in words is "sixty-four trillion, four hundred sixty-two billion, six hundred forty-two million, four hundred forty thousand, four hundred sixty-four".