64415163647 has 16 divisors (see below), whose sum is σ = 68051708928. Its totient is φ = 60848847840.

The previous prime is 64415163581. The next prime is 64415163667. The reversal of 64415163647 is 74636151446.

It is not a de Polignac number, because 64415163647 - 2⁸ = 64415163391 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 (64415163667) 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, 6926933 + ... + 6936225.

It is an arithmetic number, because the mean of its divisors is an integer number (4253231808).

Almost surely, 2^64415163647 is an apocalyptic number.

64415163647 is a deficient number, since it is larger than the sum of its proper divisors (3636545281).

64415163647 is a wasteful number, since it uses less digits than its factorization.

64415163647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13030.

The product of its digits is 1451520, while the sum is 47.

The spelling of 64415163647 in words is "sixty-four billion, four hundred fifteen million, one hundred sixty-three thousand, six hundred forty-seven".