161336612361 has 8 divisors (see below), whose sum is σ = 215153172864. Its totient is φ = 107538896720.

The previous prime is 161336612357. The next prime is 161336612387. The reversal of 161336612361 is 163216633161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161336612361 - 2² = 161336612357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161336612461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4691226 + ... + 4725491.

It is an arithmetic number, because the mean of its divisors is an integer number (26894146608).

Almost surely, 2^161336612361 is an apocalyptic number.

It is an amenable number.

161336612361 is a deficient number, since it is larger than the sum of its proper divisors (53816560503).

161336612361 is an equidigital number, since it uses as much as digits as its factorization.

161336612361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9422431.

The product of its digits is 69984, while the sum is 39.

The spelling of 161336612361 in words is "one hundred sixty-one billion, three hundred thirty-six million, six hundred twelve thousand, three hundred sixty-one".