161795951439 has 8 divisors (see below), whose sum is σ = 215809077120. Its totient is φ = 107823396696.

The previous prime is 161795951393. The next prime is 161795951441. The reversal of 161795951439 is 934159597161.

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

It is not a de Polignac number, because 161795951439 - 2⁷ = 161795951311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161795951039) 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, 10133427 + ... + 10149380.

It is an arithmetic number, because the mean of its divisors is an integer number (26976134640).

Almost surely, 2^161795951439 is an apocalyptic number.

161795951439 is a deficient number, since it is larger than the sum of its proper divisors (54013125681).

161795951439 is a wasteful number, since it uses less digits than its factorization.

161795951439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20285469.

The product of its digits is 9185400, while the sum is 60.

The spelling of 161795951439 in words is "one hundred sixty-one billion, seven hundred ninety-five million, nine hundred fifty-one thousand, four hundred thirty-nine".