42043809179563 has 32 divisors (see below), whose sum is σ = 42982239375360. Its totient is φ = 41117004314880.

The previous prime is 42043809179543. The next prime is 42043809179579. The reversal of 42043809179563 is 36597190834024.

It is a happy number.

It is a cyclic number.

42043809179563 is an astonishing number since 42043809179563 = 420438 + ... + 9179563.

It is a de Polignac number, because none of the positive numbers 2^k-42043809179563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42043809179543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11740799433 + ... + 11740803013.

It is an arithmetic number, because the mean of its divisors is an integer number (1343194980480).

It is a 2-persistent number, because it is pandigital, and so is 2⋅42043809179563 = 84087618359126, but 3⋅42043809179563 = 126131427538689 is not.

Almost surely, 2^{42043809179563} is an apocalyptic number.

42043809179563 is a deficient number, since it is larger than the sum of its proper divisors (938430195797).

42043809179563 is a wasteful number, since it uses less digits than its factorization.

42043809179563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5907.

The product of its (nonzero) digits is 39191040, while the sum is 61.

The spelling of 42043809179563 in words is "forty-two trillion, forty-three billion, eight hundred nine million, one hundred seventy-nine thousand, five hundred sixty-three".