64926840266496 has 432 divisors, whose sum is σ = 210472462122720. Its totient is φ = 19977460199424.

The previous prime is 64926840266461. The next prime is 64926840266501. The reversal of 64926840266496 is 69466204862946.

64926840266496 is a `hidden beast` number, since 6 + 4 + 92 + 6 + 8 + 40 + 2 + 6 + 6 + 496 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94275270 + ... + 94961466.

Almost surely, 2^{64926840266496} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64926840266496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105236231061360).

64926840266496 is an abundant number, since it is smaller than the sum of its proper divisors (145545621856224).

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

64926840266496 is an frugal number, since it uses more digits than its factorization.

64926840266496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686260 (or 686215 counting only the distinct ones).

The product of its (nonzero) digits is 1289945088, while the sum is 72.

The spelling of 64926840266496 in words is "sixty-four trillion, nine hundred twenty-six billion, eight hundred forty million, two hundred sixty-six thousand, four hundred ninety-six".