64576945871 has 8 divisors (see below), whose sum is σ = 65747555760. Its totient is φ = 63412417728.

The previous prime is 64576945859. The next prime is 64576945883. The reversal of 64576945871 is 17854967546.

It is an interprime number because it is at equal distance from previous prime (64576945859) and next prime (64576945883).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64576945871 - 2¹⁸ = 64576683727 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 (64576944871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1499006 + ... + 1541483.

It is an arithmetic number, because the mean of its divisors is an integer number (8218444470).

Almost surely, 2^64576945871 is an apocalyptic number.

64576945871 is a deficient number, since it is larger than the sum of its proper divisors (1170609889).

64576945871 is a wasteful number, since it uses less digits than its factorization.

64576945871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040873.

The product of its digits is 50803200, while the sum is 62.

The spelling of 64576945871 in words is "sixty-four billion, five hundred seventy-six million, nine hundred forty-five thousand, eight hundred seventy-one".