161947545327 has 48 divisors (see below), whose sum is σ = 238659063552. Its totient is φ = 105807096960.

The previous prime is 161947545317. The next prime is 161947545337. The reversal of 161947545327 is 723545749161.

161947545327 is a `hidden beast` number, since 1 + 6 + 1 + 94 + 7 + 545 + 3 + 2 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (161947545317) and next prime (161947545337).

It is not a de Polignac number, because 161947545327 - 2¹⁶ = 161947479791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161947545317) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41028568 + ... + 41032514.

It is an arithmetic number, because the mean of its divisors is an integer number (4972063824).

Almost surely, 2^161947545327 is an apocalyptic number.

161947545327 is a deficient number, since it is larger than the sum of its proper divisors (76711518225).

161947545327 is a wasteful number, since it uses less digits than its factorization.

161947545327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508 (or 4505 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The spelling of 161947545327 in words is "one hundred sixty-one billion, nine hundred forty-seven million, five hundred forty-five thousand, three hundred twenty-seven".