64550372426808 has 32 divisors (see below), whose sum is σ = 165737442719760. Its totient is φ = 20935255921920.

The previous prime is 64550372426753. The next prime is 64550372426833. The reversal of 64550372426808 is 80862427305546.

It is a super-2 number, since 2×64550372426808² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36345929533 + ... + 36345931308.

Almost surely, 2^{64550372426808} is an apocalyptic number.

It is an amenable number.

64550372426808 is an abundant number, since it is smaller than the sum of its proper divisors (101187070292952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64550372426808 is a wasteful number, since it uses less digits than its factorization.

64550372426808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72691860887 (or 72691860883 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 60.

The spelling of 64550372426808 in words is "sixty-four trillion, five hundred fifty billion, three hundred seventy-two million, four hundred twenty-six thousand, eight hundred eight".