42397564327 has 2 divisors, whose sum is σ = 42397564328. Its totient is φ = 42397564326.

The previous prime is 42397564309. The next prime is 42397564351. The reversal of 42397564327 is 72346579324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42397564327 - 2²⁷ = 42263346599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42397564357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21198782163 + 21198782164.

It is an arithmetic number, because the mean of its divisors is an integer number (21198782164).

Almost surely, 2^42397564327 is an apocalyptic number.

42397564327 is a deficient number, since it is larger than the sum of its proper divisors (1).

42397564327 is an equidigital number, since it uses as much as digits as its factorization.

42397564327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 52.

The spelling of 42397564327 in words is "forty-two billion, three hundred ninety-seven million, five hundred sixty-four thousand, three hundred twenty-seven".