64377814864 has 40 divisors (see below), whose sum is σ = 136555634880. Its totient is φ = 29158483200.

The previous prime is 64377814849. The next prime is 64377814883. The reversal of 64377814864 is 46841877346.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64377814799 and 64377814808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601404 + ... + 700315.

It is an arithmetic number, because the mean of its divisors is an integer number (3413890872).

Almost surely, 2^64377814864 is an apocalyptic number.

It is an amenable number.

64377814864 is an abundant number, since it is smaller than the sum of its proper divisors (72177820016).

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

64377814864 is a wasteful number, since it uses less digits than its factorization.

64377814864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302019 (or 1302013 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 58.

The spelling of 64377814864 in words is "sixty-four billion, three hundred seventy-seven million, eight hundred fourteen thousand, eight hundred sixty-four".