161708469400 has 24 divisors (see below), whose sum is σ = 375972191820. Its totient is φ = 64683387680.

The previous prime is 161708469389. The next prime is 161708469413. The reversal of 161708469400 is 4964807161.

It is a super-2 number, since 2×161708469400² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 404270974 + ... + 404271373.

Almost surely, 2^161708469400 is an apocalyptic number.

161708469400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161708469400 is an abundant number, since it is smaller than the sum of its proper divisors (214263722420).

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

161708469400 is a wasteful number, since it uses less digits than its factorization.

161708469400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808542363 (or 808542354 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 161708469400 in words is "one hundred sixty-one billion, seven hundred eight million, four hundred sixty-nine thousand, four hundred".