15819949445046 has 36 divisors (see below), whose sum is σ = 31694454282708. Its totient is φ = 5264239557072.

The previous prime is 15819949445033. The next prime is 15819949445051. The reversal of 15819949445046 is 64054494991851.

It is a super-2 number, since 2×15819949445046² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8018219716 + ... + 8018221688.

It is an arithmetic number, because the mean of its divisors is an integer number (880401507853).

Almost surely, 2^{15819949445046} is an apocalyptic number.

15819949445046 is an abundant number, since it is smaller than the sum of its proper divisors (15874504837662).

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

15819949445046 is an frugal number, since it uses more digits than its factorization.

15819949445046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597 (or 2801 counting only the distinct ones).

The product of its (nonzero) digits is 223948800, while the sum is 69.

The spelling of 15819949445046 in words is "fifteen trillion, eight hundred nineteen billion, nine hundred forty-nine million, four hundred forty-five thousand, forty-six".