171422431047 has 48 divisors (see below), whose sum is σ = 302925792000. Its totient is φ = 91227192192.

The previous prime is 171422431043. The next prime is 171422431069. The reversal of 171422431047 is 740134224171.

It is not a de Polignac number, because 171422431047 - 2² = 171422431043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171422431043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1143022 + ... + 1284267.

It is an arithmetic number, because the mean of its divisors is an integer number (6310954000).

Almost surely, 2^171422431047 is an apocalyptic number.

171422431047 is a deficient number, since it is larger than the sum of its proper divisors (131503360953).

171422431047 is a wasteful number, since it uses less digits than its factorization.

171422431047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427380 (or 2427377 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The spelling of 171422431047 in words is "one hundred seventy-one billion, four hundred twenty-two million, four hundred thirty-one thousand, forty-seven".