655040393023 has 2 divisors, whose sum is σ = 655040393024. Its totient is φ = 655040393022.

The previous prime is 655040393017. The next prime is 655040393041. The reversal of 655040393023 is 320393040556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655040393023 - 2⁹ = 655040392511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655040393003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327520196511 + 327520196512.

It is an arithmetic number, because the mean of its divisors is an integer number (327520196512).

Almost surely, 2^655040393023 is an apocalyptic number.

655040393023 is a deficient number, since it is larger than the sum of its proper divisors (1).

655040393023 is an equidigital number, since it uses as much as digits as its factorization.

655040393023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 40.

The spelling of 655040393023 in words is "six hundred fifty-five billion, forty million, three hundred ninety-three thousand, twenty-three".