608642965581 has 32 divisors (see below), whose sum is σ = 958206836736. Its totient is φ = 336283920000.

The previous prime is 608642965573. The next prime is 608642965607. The reversal of 608642965581 is 185569246806.

608642965581 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 608642965581 - 2³ = 608642965573 is a prime.

It is a super-2 number, since 2×608642965581² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (608642965561) 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, 343161 + ... + 1155441.

It is an arithmetic number, because the mean of its divisors is an integer number (29943963648).

Almost surely, 2^608642965581 is an apocalyptic number.

It is an amenable number.

608642965581 is a deficient number, since it is larger than the sum of its proper divisors (349563871155).

608642965581 is a wasteful number, since it uses less digits than its factorization.

608642965581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813473.

The product of its (nonzero) digits is 24883200, while the sum is 60.

The spelling of 608642965581 in words is "six hundred eight billion, six hundred forty-two million, nine hundred sixty-five thousand, five hundred eighty-one".