15997845342 has 16 divisors (see below), whose sum is σ = 33877790352. Its totient is φ = 5018931840.

The previous prime is 15997845263. The next prime is 15997845343. The reversal of 15997845342 is 24354879951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15997845343) 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 7 ways as a sum of consecutive naturals, for example, 78420709 + ... + 78420912.

It is an arithmetic number, because the mean of its divisors is an integer number (2117361897).

Almost surely, 2^15997845342 is an apocalyptic number.

15997845342 is an abundant number, since it is smaller than the sum of its proper divisors (17879945010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15997845342 is a wasteful number, since it uses less digits than its factorization.

15997845342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156841643.

The product of its digits is 10886400, while the sum is 57.

The spelling of 15997845342 in words is "fifteen billion, nine hundred ninety-seven million, eight hundred forty-five thousand, three hundred forty-two".