161155212363 has 40 divisors (see below), whose sum is σ = 245540556800. Its totient is φ = 105313124592.

The previous prime is 161155212353. The next prime is 161155212373. The reversal of 161155212363 is 363212551161.

161155212363 is a `hidden beast` number, since 1 + 61 + 1 + 552 + 12 + 36 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (161155212353) and next prime (161155212373).

It is not a de Polignac number, because 161155212363 - 2¹² = 161155208267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161155212353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 798870 + ... + 980052.

It is an arithmetic number, because the mean of its divisors is an integer number (6138513920).

Almost surely, 2^161155212363 is an apocalyptic number.

161155212363 is a deficient number, since it is larger than the sum of its proper divisors (84385344437).

161155212363 is a wasteful number, since it uses less digits than its factorization.

161155212363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181413 (or 181404 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The spelling of 161155212363 in words is "one hundred sixty-one billion, one hundred fifty-five million, two hundred twelve thousand, three hundred sixty-three".