161442127760 has 20 divisors (see below), whose sum is σ = 375352947228. Its totient is φ = 64576851072.

The previous prime is 161442127757. The next prime is 161442127771. The reversal of 161442127760 is 67721244161.

It can be written as a sum of positive squares in 2 ways, for example, as 52100801536 + 109341326224 = 228256^2 + 330668^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009013219 + ... + 1009013378.

Almost surely, 2^161442127760 is an apocalyptic number.

161442127760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161442127760 is an abundant number, since it is smaller than the sum of its proper divisors (213910819468).

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

161442127760 is a wasteful number, since it uses less digits than its factorization.

161442127760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018026610 (or 2018026604 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 161442127760 in words is "one hundred sixty-one billion, four hundred forty-two million, one hundred twenty-seven thousand, seven hundred sixty".