64157501647 has 32 divisors (see below), whose sum is σ = 73106193600. Its totient is φ = 56020543488.

The previous prime is 64157501641. The next prime is 64157501659. The reversal of 64157501647 is 74610575146.

It is a cyclic number.

It is not a de Polignac number, because 64157501647 - 2⁷ = 64157501519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64157501597 and 64157501606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64157501641) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1050823 + ... + 1110199.

It is an arithmetic number, because the mean of its divisors is an integer number (2284568550).

Almost surely, 2^64157501647 is an apocalyptic number.

64157501647 is a deficient number, since it is larger than the sum of its proper divisors (8948691953).

64157501647 is a wasteful number, since it uses less digits than its factorization.

64157501647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59515.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 64157501647 in words is "sixty-four billion, one hundred fifty-seven million, five hundred one thousand, six hundred forty-seven".