169170690042 has 24 divisors (see below), whose sum is σ = 375060601344. Its totient is φ = 55078829064.

The previous prime is 169170690019. The next prime is 169170690043. The reversal of 169170690042 is 240096071961.

It is a self number, because there is not a number n which added to its sum of digits gives 169170690042.

It is not an unprimeable number, because it can be changed into a prime (169170690043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109282618 + ... + 109284165.

It is an arithmetic number, because the mean of its divisors is an integer number (15627525056).

Almost surely, 2^169170690042 is an apocalyptic number.

169170690042 is an abundant number, since it is smaller than the sum of its proper divisors (205889911302).

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

169170690042 is a wasteful number, since it uses less digits than its factorization.

169170690042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218566834 (or 218566831 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 169170690042 in words is "one hundred sixty-nine billion, one hundred seventy million, six hundred ninety thousand, forty-two".