42345215512979 has 2 divisors, whose sum is σ = 42345215512980. Its totient is φ = 42345215512978.

The previous prime is 42345215512969. The next prime is 42345215513017. The reversal of 42345215512979 is 97921551254324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42345215512979 - 2²⁸ = 42344947077523 is a prime.

It is not a weakly prime, because it can be changed into another prime (42345215512969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21172607756489 + 21172607756490.

It is an arithmetic number, because the mean of its divisors is an integer number (21172607756490).

Almost surely, 2^{42345215512979} is an apocalyptic number.

42345215512979 is a deficient number, since it is larger than the sum of its proper divisors (1).

42345215512979 is an equidigital number, since it uses as much as digits as its factorization.

42345215512979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216000, while the sum is 59.

The spelling of 42345215512979 in words is "forty-two trillion, three hundred forty-five billion, two hundred fifteen million, five hundred twelve thousand, nine hundred seventy-nine".