161027477132 has 12 divisors (see below), whose sum is σ = 281823511200. Its totient is φ = 80506473936.

The previous prime is 161027477131. The next prime is 161027477153. The reversal of 161027477132 is 231774720161.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 161027477132.

It is not an unprimeable number, because it can be changed into a prime (161027477131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766132 + ... + 1855067.

It is an arithmetic number, because the mean of its divisors is an integer number (23485292600).

Almost surely, 2^161027477132 is an apocalyptic number.

It is an amenable number.

161027477132 is a deficient number, since it is larger than the sum of its proper divisors (120796034068).

161027477132 is a wasteful number, since it uses less digits than its factorization.

161027477132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632320 (or 3632318 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 161027477132 in words is "one hundred sixty-one billion, twenty-seven million, four hundred seventy-seven thousand, one hundred thirty-two".