42769797879639 has 16 divisors (see below), whose sum is σ = 57581205653504. Its totient is φ = 28235805444000.

The previous prime is 42769797879637. The next prime is 42769797879701. The reversal of 42769797879639 is 93697879796724.

It is not a de Polignac number, because 42769797879639 - 2¹ = 42769797879637 is a prime.

It is a super-2 number, since 2×42769797879639² (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 (42769797879637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14341914 + ... + 17065464.

It is an arithmetic number, because the mean of its divisors is an integer number (3598825353344).

Almost surely, 2^{42769797879639} is an apocalyptic number.

42769797879639 is a deficient number, since it is larger than the sum of its proper divisors (14811407773865).

42769797879639 is a wasteful number, since it uses less digits than its factorization.

42769797879639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774478.

The product of its digits is 108884466432, while the sum is 93.

The spelling of 42769797879639 in words is "forty-two trillion, seven hundred sixty-nine billion, seven hundred ninety-seven million, eight hundred seventy-nine thousand, six hundred thirty-nine".