42016811345 has 4 divisors (see below), whose sum is σ = 50420173620. Its totient is φ = 33613449072.

The previous prime is 42016811197. The next prime is 42016811371. The reversal of 42016811345 is 54311861024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24372205456 + 17644605889 = 156116^2 + 132833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42016811345 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4201681130 + ... + 4201681139.

It is an arithmetic number, because the mean of its divisors is an integer number (12605043405).

Almost surely, 2^42016811345 is an apocalyptic number.

It is an amenable number.

42016811345 is a deficient number, since it is larger than the sum of its proper divisors (8403362275).

42016811345 is an equidigital number, since it uses as much as digits as its factorization.

42016811345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8403362274.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 42016811345 in words is "forty-two billion, sixteen million, eight hundred eleven thousand, three hundred forty-five".