64118562812 has 24 divisors (see below), whose sum is σ = 114737436576. Its totient is φ = 31340806848.

The previous prime is 64118562811. The next prime is 64118562881. The reversal of 64118562812 is 21826581146.

It is a super-2 number, since 2×64118562812² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64118562811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487208 + ... + 604655.

It is an arithmetic number, because the mean of its divisors is an integer number (4780726524).

Almost surely, 2^64118562812 is an apocalyptic number.

It is an amenable number.

64118562812 is a deficient number, since it is larger than the sum of its proper divisors (50618873764).

64118562812 is a wasteful number, since it uses less digits than its factorization.

64118562812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092197 (or 1092195 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The spelling of 64118562812 in words is "sixty-four billion, one hundred eighteen million, five hundred sixty-two thousand, eight hundred twelve".