169231980840 has 256 divisors, whose sum is σ = 591084345600. Its totient is φ = 38397763584.

The previous prime is 169231980833. The next prime is 169231980871. The reversal of 169231980840 is 48089132961.

It is a super-3 number, since 3×169231980840³ (a number of 35 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1019524 + ... + 1173836.

It is an arithmetic number, because the mean of its divisors is an integer number (2308923225).

Almost surely, 2^169231980840 is an apocalyptic number.

169231980840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169231980840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295542172800).

169231980840 is an abundant number, since it is smaller than the sum of its proper divisors (421852364760).

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

169231980840 is a wasteful number, since it uses less digits than its factorization.

169231980840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154396 (or 154392 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The spelling of 169231980840 in words is "one hundred sixty-nine billion, two hundred thirty-one million, nine hundred eighty thousand, eight hundred forty".