64154729612 has 6 divisors (see below), whose sum is σ = 112270776828. Its totient is φ = 32077364804.

The previous prime is 64154729581. The next prime is 64154729621. The reversal of 64154729612 is 21692745146.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8019341198 + ... + 8019341205.

It is an arithmetic number, because the mean of its divisors is an integer number (18711796138).

Almost surely, 2^64154729612 is an apocalyptic number.

It is an amenable number.

64154729612 is a deficient number, since it is larger than the sum of its proper divisors (48116047216).

64154729612 is a wasteful number, since it uses less digits than its factorization.

64154729612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16038682407 (or 16038682405 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The spelling of 64154729612 in words is "sixty-four billion, one hundred fifty-four million, seven hundred twenty-nine thousand, six hundred twelve".