64664607046 has 32 divisors (see below), whose sum is σ = 108514844928. Its totient is φ = 28698433920.

The previous prime is 64664607031. The next prime is 64664607061. The reversal of 64664607046 is 64070646646.

It is an interprime number because it is at equal distance from previous prime (64664607031) and next prime (64664607061).

It is a super-2 number, since 2×64664607046² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128965 + ... + 382048.

It is an arithmetic number, because the mean of its divisors is an integer number (3391088904).

Almost surely, 2^64664607046 is an apocalyptic number.

64664607046 is a deficient number, since it is larger than the sum of its proper divisors (43850237882).

64664607046 is a wasteful number, since it uses less digits than its factorization.

64664607046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511216.

The product of its (nonzero) digits is 3483648, while the sum is 49.

The spelling of 64664607046 in words is "sixty-four billion, six hundred sixty-four million, six hundred seven thousand, forty-six".