64770243223161 has 16 divisors (see below), whose sum is σ = 99474659262464. Its totient is φ = 36720137888784.

The previous prime is 64770243223139. The next prime is 64770243223183. The reversal of 64770243223161 is 16132234207746.

It is an interprime number because it is at equal distance from previous prime (64770243223139) and next prime (64770243223183).

It is not a de Polignac number, because 64770243223161 - 2³⁴ = 64753063353977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64770243223161.

It is not an unprimeable number, because it can be changed into a prime (64770243323161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12142900075 + ... + 12142905408.

It is an arithmetic number, because the mean of its divisors is an integer number (6217166203904).

Almost surely, 2^{64770243223161} is an apocalyptic number.

It is an amenable number.

64770243223161 is a deficient number, since it is larger than the sum of its proper divisors (34704416039303).

64770243223161 is a wasteful number, since it uses less digits than its factorization.

64770243223161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24285805620.

The product of its (nonzero) digits is 2032128, while the sum is 48.

The spelling of 64770243223161 in words is "sixty-four trillion, seven hundred seventy billion, two hundred forty-three million, two hundred twenty-three thousand, one hundred sixty-one".