171412778922 has 48 divisors (see below), whose sum is σ = 435051365472. Its totient is φ = 44522798880.

The previous prime is 171412778899. The next prime is 171412778923. The reversal of 171412778922 is 229877214171.

It is not an unprimeable number, because it can be changed into a prime (171412778923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26498433 + ... + 26504900.

It is an arithmetic number, because the mean of its divisors is an integer number (9063570114).

Almost surely, 2^171412778922 is an apocalyptic number.

171412778922 is an abundant number, since it is smaller than the sum of its proper divisors (263638586550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171412778922 is a wasteful number, since it uses less digits than its factorization.

171412778922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53003363 (or 53003356 counting only the distinct ones).

The product of its digits is 790272, while the sum is 51.

The spelling of 171412778922 in words is "one hundred seventy-one billion, four hundred twelve million, seven hundred seventy-eight thousand, nine hundred twenty-two".