64457522906790 has 64 divisors (see below), whose sum is σ = 169329018624192. Its totient is φ = 15606361152000.

The previous prime is 64457522906779. The next prime is 64457522906869. The reversal of 64457522906790 is 9760922575446.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1354695061 + ... + 1354742640.

It is an arithmetic number, because the mean of its divisors is an integer number (2645765916003).

Almost surely, 2^{64457522906790} is an apocalyptic number.

64457522906790 is an abundant number, since it is smaller than the sum of its proper divisors (104871495717402).

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

64457522906790 is a wasteful number, since it uses less digits than its factorization.

64457522906790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709437785.

The product of its (nonzero) digits is 228614400, while the sum is 66.

The spelling of 64457522906790 in words is "sixty-four trillion, four hundred fifty-seven billion, five hundred twenty-two million, nine hundred six thousand, seven hundred ninety".