161950990295 has 8 divisors (see below), whose sum is σ = 194368499424. Its totient is φ = 129542584864.

The previous prime is 161950990261. The next prime is 161950990321. The reversal of 161950990295 is 592099059161.

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 161950990295 - 2¹⁰ = 161950989271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161950990295.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2236724 + ... + 2307993.

It is an arithmetic number, because the mean of its divisors is an integer number (24296062428).

Almost surely, 2^161950990295 is an apocalyptic number.

161950990295 is a deficient number, since it is larger than the sum of its proper divisors (32417509129).

161950990295 is an equidigital number, since it uses as much as digits as its factorization.

161950990295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551849.

The product of its (nonzero) digits is 1968300, while the sum is 56.

The spelling of 161950990295 in words is "one hundred sixty-one billion, nine hundred fifty million, nine hundred ninety thousand, two hundred ninety-five".