64626954948864 has 540 divisors, whose sum is σ = 244547029309968. Its totient is φ = 16786219161600.

The previous prime is 64626954948827. The next prime is 64626954948901. The reversal of 64626954948864 is 46884945962646.

64626954948864 is a `hidden beast` number, since 6 + 4 + 6 + 2 + 6 + 9 + 549 + 4 + 8 + 8 + 64 = 666.

It is an interprime number because it is at equal distance from previous prime (64626954948827) and next prime (64626954948901).

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 8285559 + ... + 14067849.

Almost surely, 2^{64626954948864} is an apocalyptic number.

64626954948864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64626954948864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122273514654984).

64626954948864 is an abundant number, since it is smaller than the sum of its proper divisors (179920074361104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64626954948864 is a wasteful number, since it uses less digits than its factorization.

64626954948864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5782344 (or 5782314 counting only the distinct ones).

The product of its digits is 17199267840, while the sum is 81.

The spelling of 64626954948864 in words is "sixty-four trillion, six hundred twenty-six billion, nine hundred fifty-four million, nine hundred forty-eight thousand, eight hundred sixty-four".