64212655456 has 12 divisors (see below), whose sum is σ = 126418665492. Its totient is φ = 32106327712.

The previous prime is 64212655427. The next prime is 64212655457. The reversal of 64212655456 is 65455621246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64212655457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003322710 + ... + 1003322773.

It is an arithmetic number, because the mean of its divisors is an integer number (10534888791).

Almost surely, 2^64212655456 is an apocalyptic number.

It is an amenable number.

64212655456 is a deficient number, since it is larger than the sum of its proper divisors (62206010036).

64212655456 is a wasteful number, since it uses less digits than its factorization.

64212655456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006645493 (or 2006645485 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 46.

The spelling of 64212655456 in words is "sixty-four billion, two hundred twelve million, six hundred fifty-five thousand, four hundred fifty-six".