64020426464 has 24 divisors (see below), whose sum is σ = 126149602320. Its totient is φ = 31982432256.

The previous prime is 64020426389. The next prime is 64020426467. The reversal of 64020426464 is 46462402046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64020426467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830684 + ... + 904475.

It is an arithmetic number, because the mean of its divisors is an integer number (5256233430).

Almost surely, 2^64020426464 is an apocalyptic number.

It is an amenable number.

64020426464 is a deficient number, since it is larger than the sum of its proper divisors (62129175856).

64020426464 is a wasteful number, since it uses less digits than its factorization.

64020426464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736322 (or 1736314 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

The spelling of 64020426464 in words is "sixty-four billion, twenty million, four hundred twenty-six thousand, four hundred sixty-four".