64194867176364 has 72 divisors (see below), whose sum is σ = 169800497914320. Its totient is φ = 20427127523712.

The previous prime is 64194867176351. The next prime is 64194867176369. The reversal of 64194867176364 is 46367176849146.

It is a happy number.

64194867176364 is a `hidden beast` number, since 6 + 4 + 1 + 9 + 486 + 71 + 76 + 3 + 6 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 64194867176292 and 64194867176301.

It is not an unprimeable number, because it can be changed into a prime (64194867176369) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 454593034 + ... + 454734225.

It is an arithmetic number, because the mean of its divisors is an integer number (2358340248810).

Almost surely, 2^{64194867176364} is an apocalyptic number.

It is an amenable number.

64194867176364 is an abundant number, since it is smaller than the sum of its proper divisors (105605630737956).

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

64194867176364 is a wasteful number, since it uses less digits than its factorization.

64194867176364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909327359 (or 909327354 counting only the distinct ones).

The product of its digits is 877879296, while the sum is 72.

The spelling of 64194867176364 in words is "sixty-four trillion, one hundred ninety-four billion, eight hundred sixty-seven million, one hundred seventy-six thousand, three hundred sixty-four".