42534390911 has 2 divisors, whose sum is σ = 42534390912. Its totient is φ = 42534390910.

The previous prime is 42534390893. The next prime is 42534390919. The reversal of 42534390911 is 11909343524.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42534390911 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42534390919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21267195455 + 21267195456.

It is an arithmetic number, because the mean of its divisors is an integer number (21267195456).

Almost surely, 2^42534390911 is an apocalyptic number.

42534390911 is a deficient number, since it is larger than the sum of its proper divisors (1).

42534390911 is an equidigital number, since it uses as much as digits as its factorization.

42534390911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 42534390911 in words is "forty-two billion, five hundred thirty-four million, three hundred ninety thousand, nine hundred eleven".