161098979295 has 24 divisors (see below), whose sum is σ = 258833741328. Its totient is φ = 85562480640.

The previous prime is 161098979287. The next prime is 161098979297. The reversal of 161098979295 is 592979890161.

It is not a de Polignac number, because 161098979295 - 2³ = 161098979287 is a prime.

It is a super-2 number, since 2×161098979295² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161098979297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 778759 + ... + 963671.

It is an arithmetic number, because the mean of its divisors is an integer number (10784739222).

Almost surely, 2^161098979295 is an apocalyptic number.

161098979295 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161098979295 is a deficient number, since it is larger than the sum of its proper divisors (97734762033).

161098979295 is an equidigital number, since it uses as much as digits as its factorization.

161098979295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185403 (or 185162 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 66.

The spelling of 161098979295 in words is "one hundred sixty-one billion, ninety-eight million, nine hundred seventy-nine thousand, two hundred ninety-five".