64121212676 has 24 divisors (see below), whose sum is σ = 120255535680. Its totient is φ = 29837836512.

The previous prime is 64121212657. The next prime is 64121212679. The reversal of 64121212676 is 67621212146.

It is a happy number.

It is a super-2 number, since 2×64121212676² (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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9415106 + ... + 9421913.

It is an arithmetic number, because the mean of its divisors is an integer number (5010647320).

Almost surely, 2^64121212676 is an apocalyptic number.

It is an amenable number.

64121212676 is a deficient number, since it is larger than the sum of its proper divisors (56134323004).

64121212676 is a wasteful number, since it uses less digits than its factorization.

64121212676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18837083 (or 18837081 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The spelling of 64121212676 in words is "sixty-four billion, one hundred twenty-one million, two hundred twelve thousand, six hundred seventy-six".