64157042880822 has 64 divisors (see below), whose sum is σ = 129515520314880. Its totient is φ = 21186323069184.

The previous prime is 64157042880817. The next prime is 64157042880829. The reversal of 64157042880822 is 22808824075146.

It is a super-2 number, since 2×64157042880822² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64157042880829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2647932204 + ... + 2647956432.

It is an arithmetic number, because the mean of its divisors is an integer number (2023680004920).

Almost surely, 2^{64157042880822} is an apocalyptic number.

64157042880822 is an abundant number, since it is smaller than the sum of its proper divisors (65358477434058).

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

64157042880822 is a wasteful number, since it uses less digits than its factorization.

64157042880822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33157.

The product of its (nonzero) digits is 13762560, while the sum is 57.

The spelling of 64157042880822 in words is "sixty-four trillion, one hundred fifty-seven billion, forty-two million, eight hundred eighty thousand, eight hundred twenty-two".