64924656812 has 12 divisors (see below), whose sum is σ = 113620228176. Its totient is φ = 32461734480.

The previous prime is 64924656809. The next prime is 64924656833. The reversal of 64924656812 is 21865642946.

It is a happy number.

It is a super-2 number, since 2×64924656812² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176513 + ... + 401255.

It is an arithmetic number, because the mean of its divisors is an integer number (9468352348).

Almost surely, 2^64924656812 is an apocalyptic number.

It is an amenable number.

64924656812 is a deficient number, since it is larger than the sum of its proper divisors (48695571364).

64924656812 is a wasteful number, since it uses less digits than its factorization.

64924656812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296968 (or 296966 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 53.

The spelling of 64924656812 in words is "sixty-four billion, nine hundred twenty-four million, six hundred fifty-six thousand, eight hundred twelve".