42697691171 has 4 divisors (see below), whose sum is σ = 43177440600. Its totient is φ = 42217941744.

The previous prime is 42697691149. The next prime is 42697691189. The reversal of 42697691171 is 17119679624.

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

It is not a de Polignac number, because 42697691171 - 2⁶ = 42697691107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42697691131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239874581 + ... + 239874758.

It is an arithmetic number, because the mean of its divisors is an integer number (10794360150).

Almost surely, 2^42697691171 is an apocalyptic number.

42697691171 is a deficient number, since it is larger than the sum of its proper divisors (479749429).

42697691171 is an equidigital number, since it uses as much as digits as its factorization.

42697691171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479749428.

The product of its digits is 1143072, while the sum is 53.

The spelling of 42697691171 in words is "forty-two billion, six hundred ninety-seven million, six hundred ninety-one thousand, one hundred seventy-one".