169261880340 has 48 divisors (see below), whose sum is σ = 541638018432. Its totient is φ = 38688429696.

The previous prime is 169261880317. The next prime is 169261880351. The reversal of 169261880340 is 43088162961.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 169261880340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201501819 + ... + 201502658.

It is an arithmetic number, because the mean of its divisors is an integer number (11284125384).

Almost surely, 2^169261880340 is an apocalyptic number.

169261880340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

169261880340 is an abundant number, since it is smaller than the sum of its proper divisors (372376138092).

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

169261880340 is a wasteful number, since it uses less digits than its factorization.

169261880340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403004496 (or 403004494 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 169261880340 in words is "one hundred sixty-nine billion, two hundred sixty-one million, eight hundred eighty thousand, three hundred forty".