169406089842 has 32 divisors (see below), whose sum is σ = 369631427904. Its totient is φ = 51332659200.

The previous prime is 169406089823. The next prime is 169406089843. The reversal of 169406089842 is 248980604961.

It is not an unprimeable number, because it can be changed into a prime (169406089843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1636818 + ... + 1737234.

It is an arithmetic number, because the mean of its divisors is an integer number (11550982122).

Almost surely, 2^169406089842 is an apocalyptic number.

169406089842 is an abundant number, since it is smaller than the sum of its proper divisors (200225338062).

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

169406089842 is a wasteful number, since it uses less digits than its factorization.

169406089842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125994.

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 169406089842 in words is "one hundred sixty-nine billion, four hundred six million, eighty-nine thousand, eight hundred forty-two".