64702079178368 has 256 divisors, whose sum is σ = 135277861847040. Its totient is φ = 30800313815040.

The previous prime is 64702079178361. The next prime is 64702079178371. The reversal of 64702079178368 is 86387197020746.

It is a junction number, because it is equal to n+sod(n) for n = 64702079178298 and 64702079178307.

It is not an unprimeable number, because it can be changed into a prime (64702079178361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13875631205 + ... + 13875635867.

It is an arithmetic number, because the mean of its divisors is an integer number (528429147840).

Almost surely, 2^{64702079178368} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64702079178368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67638930923520).

64702079178368 is an abundant number, since it is smaller than the sum of its proper divisors (70575782668672).

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

64702079178368 is a wasteful number, since it uses less digits than its factorization.

64702079178368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5175 (or 5163 counting only the distinct ones).

The product of its (nonzero) digits is 170698752, while the sum is 68.

The spelling of 64702079178368 in words is "sixty-four trillion, seven hundred two billion, seventy-nine million, one hundred seventy-eight thousand, three hundred sixty-eight".