161588881746800 has 30 divisors (see below), whose sum is σ = 388217288397648. Its totient is φ = 64635552698560.

The previous prime is 161588881746793. The next prime is 161588881746821. The reversal of 161588881746800 is 8647188885161.

It is a super-2 number, since 2×161588881746800² (a number of 29 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, 201986101784 + ... + 201986102583.

Almost surely, 2^{161588881746800} is an apocalyptic number.

161588881746800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161588881746800 is an abundant number, since it is smaller than the sum of its proper divisors (226628406650848).

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

161588881746800 is a wasteful number, since it uses less digits than its factorization.

161588881746800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403972204385 (or 403972204374 counting only the distinct ones).

The product of its (nonzero) digits is 165150720, while the sum is 71.

The spelling of 161588881746800 in words is "one hundred sixty-one trillion, five hundred eighty-eight billion, eight hundred eighty-one million, seven hundred forty-six thousand, eight hundred".