64651426552 has 16 divisors (see below), whose sum is σ = 122755874400. Its totient is φ = 31916526720.

The previous prime is 64651426537. The next prime is 64651426571. The reversal of 64651426552 is 25562415646.

It is a congruent number.

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, 51147649 + ... + 51148912.

It is an arithmetic number, because the mean of its divisors is an integer number (7672242150).

Almost surely, 2^64651426552 is an apocalyptic number.

It is an amenable number.

64651426552 is a deficient number, since it is larger than the sum of its proper divisors (58104447848).

64651426552 is a wasteful number, since it uses less digits than its factorization.

64651426552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102296646 (or 102296642 counting only the distinct ones).

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

The spelling of 64651426552 in words is "sixty-four billion, six hundred fifty-one million, four hundred twenty-six thousand, five hundred fifty-two".