42172765800479 has 4 divisors (see below), whose sum is σ = 42180727437984. Its totient is φ = 42164804162976.

The previous prime is 42172765800391. The next prime is 42172765800611. The reversal of 42172765800479 is 97400856727124.

42172765800479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42172765800479 is a prime.

It is a super-2 number, since 2×42172765800479² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42172765800379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3980810807 + ... + 3980821400.

It is an arithmetic number, because the mean of its divisors is an integer number (10545181859496).

Almost surely, 2^{42172765800479} is an apocalyptic number.

42172765800479 is a deficient number, since it is larger than the sum of its proper divisors (7961637505).

42172765800479 is an equidigital number, since it uses as much as digits as its factorization.

42172765800479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7961637504.

The product of its (nonzero) digits is 47416320, while the sum is 62.

The spelling of 42172765800479 in words is "forty-two trillion, one hundred seventy-two billion, seven hundred sixty-five million, eight hundred thousand, four hundred seventy-nine".