64311124216 has 8 divisors (see below), whose sum is σ = 120583357920. Its totient is φ = 32155562104.

The previous prime is 64311124193. The next prime is 64311124223. The reversal of 64311124216 is 61242111346.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×64311124216² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4019445256 + ... + 4019445271.

It is an arithmetic number, because the mean of its divisors is an integer number (15072919740).

Almost surely, 2^64311124216 is an apocalyptic number.

It is an amenable number.

64311124216 is a deficient number, since it is larger than the sum of its proper divisors (56272233704).

64311124216 is a wasteful number, since it uses less digits than its factorization.

64311124216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8038890533 (or 8038890529 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The spelling of 64311124216 in words is "sixty-four billion, three hundred eleven million, one hundred twenty-four thousand, two hundred sixteen".