64150966881 has 6 divisors (see below), whose sum is σ = 92662507730. Its totient is φ = 42767311248.

The previous prime is 64150966843. The next prime is 64150966907. The reversal of 64150966881 is 18866905146.

64150966881 is a `hidden beast` number, since 6 + 415 + 0 + 96 + 68 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 46951955856 + 17199011025 = 216684^2 + 131145^2 .

It is not a de Polignac number, because 64150966881 - 2²⁶ = 64083858017 is a prime.

It is a super-2 number, since 2×64150966881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64150966081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3563942596 + ... + 3563942613.

Almost surely, 2^64150966881 is an apocalyptic number.

It is an amenable number.

64150966881 is a deficient number, since it is larger than the sum of its proper divisors (28511540849).

64150966881 is a wasteful number, since it uses less digits than its factorization.

64150966881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7127885215 (or 7127885212 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 64150966881 in words is "sixty-four billion, one hundred fifty million, nine hundred sixty-six thousand, eight hundred eighty-one".