42918139567 has 4 divisors (see below), whose sum is σ = 43916235880. Its totient is φ = 41920043256.

The previous prime is 42918139553. The next prime is 42918139571. The reversal of 42918139567 is 76593181924.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42918139567 - 2²⁷ = 42783921839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42918139067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499048092 + ... + 499048177.

It is an arithmetic number, because the mean of its divisors is an integer number (10979058970).

Almost surely, 2^42918139567 is an apocalyptic number.

42918139567 is a deficient number, since it is larger than the sum of its proper divisors (998096313).

42918139567 is an equidigital number, since it uses as much as digits as its factorization.

42918139567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998096312.

The product of its digits is 3265920, while the sum is 55.

The spelling of 42918139567 in words is "forty-two billion, nine hundred eighteen million, one hundred thirty-nine thousand, five hundred sixty-seven".