64173942026496 has 135 divisors (see below), whose sum is σ = 191358523184983. Its totient is φ = 21390929487360.

The previous prime is 64173942026429. The next prime is 64173942026507. The reversal of 64173942026496 is 69462024937146.

The square root of 64173942026496 is 8010864.

It is a perfect power (a square), and thus also a powerful number.

64173942026496 is a `hidden beast` number, since 6 + 4 + 17 + 3 + 94 + 20 + 26 + 496 = 666.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1153536601 + ... + 1153592231.

Almost surely, 2^{64173942026496} is an apocalyptic number.

64173942026496 is the 8010864-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64173942026496

64173942026496 is an abundant number, since it is smaller than the sum of its proper divisors (127184581158487).

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

64173942026496 is an frugal number, since it uses more digits than its factorization.

64173942026496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111290 (or 55636 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 63.

The spelling of 64173942026496 in words is "sixty-four trillion, one hundred seventy-three billion, nine hundred forty-two million, twenty-six thousand, four hundred ninety-six".