64121212675 has 36 divisors (see below), whose sum is σ = 86925540576. Its totient is φ = 46643256000.

The previous prime is 64121212657. The next prime is 64121212679. The reversal of 64121212675 is 57621212146.

It is not a de Polignac number, because 64121212675 - 2⁹ = 64121212163 is a prime.

It is a super-2 number, since 2×64121212675² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64121212679) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1436950 + ... + 1480900.

Almost surely, 2^64121212675 is an apocalyptic number.

64121212675 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64121212675 is a deficient number, since it is larger than the sum of its proper divisors (22804327901).

64121212675 is a wasteful number, since it uses less digits than its factorization.

64121212675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44108 (or 44036 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The spelling of 64121212675 in words is "sixty-four billion, one hundred twenty-one million, two hundred twelve thousand, six hundred seventy-five".