15819949444998 has 16 divisors (see below), whose sum is σ = 31641557307696. Its totient is φ = 5273040078720.

The previous prime is 15819949444997. The next prime is 15819949445017. The reversal of 15819949444998 is 89944494991851.

It is a self number, because there is not a number n which added to its sum of digits gives 15819949444998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15819949444993) 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, 68976711 + ... + 69205682.

It is an arithmetic number, because the mean of its divisors is an integer number (1977597331731).

Almost surely, 2^{15819949444998} is an apocalyptic number.

15819949444998 is an abundant number, since it is smaller than the sum of its proper divisors (15821607862698).

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

15819949444998 is a wasteful number, since it uses less digits than its factorization.

15819949444998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138201479.

The product of its digits is 4837294080, while the sum is 84.

The spelling of 15819949444998 in words is "fifteen trillion, eight hundred nineteen billion, nine hundred forty-nine million, four hundred forty-four thousand, nine hundred ninety-eight".