64892189968677 has 12 divisors (see below), whose sum is σ = 93742695925164. Its totient is φ = 43257060300480.

The previous prime is 64892189968667. The next prime is 64892189968681. The reversal of 64892189968677 is 77686998129846.

64892189968677 is a `hidden beast` number, since 6 + 489 + 2 + 1 + 8 + 9 + 9 + 68 + 67 + 7 = 666.

64892189968677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 35726130853956 + 29166059114721 = 5977134^2 + 5400561^2 .

It is not a de Polignac number, because 64892189968677 - 2²⁶ = 64892122859813 is a prime.

It is a super-2 number, since 2×64892189968677² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64892189968667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366546474 + ... + 366723467.

It is an arithmetic number, because the mean of its divisors is an integer number (7811891327097).

Almost surely, 2^{64892189968677} is an apocalyptic number.

It is an amenable number.

64892189968677 is a deficient number, since it is larger than the sum of its proper divisors (28850505956487).

64892189968677 is a wasteful number, since it uses less digits than its factorization.

64892189968677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733279780 (or 733279777 counting only the distinct ones).

The product of its digits is 31603654656, while the sum is 90.

The spelling of 64892189968677 in words is "sixty-four trillion, eight hundred ninety-two billion, one hundred eighty-nine million, nine hundred sixty-eight thousand, six hundred seventy-seven".