64471608315 has 64 divisors (see below), whose sum is σ = 119655705600. Its totient is φ = 32874412032.

The previous prime is 64471608167. The next prime is 64471608329. The reversal of 64471608315 is 51380617446.

64471608315 is a `hidden beast` number, since 6 + 4 + 4 + 7 + 1 + 608 + 31 + 5 = 666.

It is not a de Polignac number, because 64471608315 - 2⁸ = 64471608059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9737076 + ... + 9743694.

It is an arithmetic number, because the mean of its divisors is an integer number (1869620400).

Almost surely, 2^64471608315 is an apocalyptic number.

64471608315 is a deficient number, since it is larger than the sum of its proper divisors (55184097285).

64471608315 is a wasteful number, since it uses less digits than its factorization.

64471608315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9793 (or 9787 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 64471608315 in words is "sixty-four billion, four hundred seventy-one million, six hundred eight thousand, three hundred fifteen".