161408266140 has 96 divisors (see below), whose sum is σ = 493145533440. Its totient is φ = 39120019200.

The previous prime is 161408266087. The next prime is 161408266177. The reversal of 161408266140 is 41662804161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3003426 + ... + 3056694.

It is an arithmetic number, because the mean of its divisors is an integer number (5136932640).

Almost surely, 2^161408266140 is an apocalyptic number.

161408266140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161408266140 is an abundant number, since it is smaller than the sum of its proper divisors (331737267300).

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

161408266140 is a wasteful number, since it uses less digits than its factorization.

161408266140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57883 (or 57881 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 161408266140 in words is "one hundred sixty-one billion, four hundred eight million, two hundred sixty-six thousand, one hundred forty".