161468161400 has 144 divisors (see below), whose sum is σ = 470298570840. Its totient is φ = 51101971200.

The previous prime is 161468161391. The next prime is 161468161417. The reversal of 161468161400 is 4161864161.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 506306 + ... + 761105.

Almost surely, 2^161468161400 is an apocalyptic number.

161468161400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161468161400 is an abundant number, since it is smaller than the sum of its proper divisors (308830409440).

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

161468161400 is a wasteful number, since it uses less digits than its factorization.

161468161400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267454 (or 1267438 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 161468161400 in words is "one hundred sixty-one billion, four hundred sixty-eight million, one hundred sixty-one thousand, four hundred".