169860997940 has 24 divisors (see below), whose sum is σ = 372217144320. Its totient is φ = 64990294688.

The previous prime is 169860997927. The next prime is 169860997967. The reversal of 169860997940 is 49799068961.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184631060 + ... + 184631979.

It is an arithmetic number, because the mean of its divisors is an integer number (15509047680).

Almost surely, 2^169860997940 is an apocalyptic number.

169860997940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

169860997940 is an abundant number, since it is smaller than the sum of its proper divisors (202356146380).

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

169860997940 is a wasteful number, since it uses less digits than its factorization.

169860997940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369263071 (or 369263069 counting only the distinct ones).

The product of its (nonzero) digits is 52907904, while the sum is 68.

The spelling of 169860997940 in words is "one hundred sixty-nine billion, eight hundred sixty million, nine hundred ninety-seven thousand, nine hundred forty".