169170490023 has 4 divisors (see below), whose sum is σ = 225560653368. Its totient is φ = 112780326680.

The previous prime is 169170490009. The next prime is 169170490037. The reversal of 169170490023 is 320094071961.

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

It is an interprime number because it is at equal distance from previous prime (169170490009) and next prime (169170490037).

It is a cyclic number.

It is not a de Polignac number, because 169170490023 - 2⁵ = 169170489991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169170490003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28195081668 + ... + 28195081673.

It is an arithmetic number, because the mean of its divisors is an integer number (56390163342).

Almost surely, 2^169170490023 is an apocalyptic number.

169170490023 is a deficient number, since it is larger than the sum of its proper divisors (56390163345).

169170490023 is an equidigital number, since it uses as much as digits as its factorization.

169170490023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56390163344.

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 169170490023 in words is "one hundred sixty-nine billion, one hundred seventy million, four hundred ninety thousand, twenty-three".