15873157315873 has 12 divisors (see below), whose sum is σ = 18789458947924. Its totient is φ = 13320132012000.

The previous prime is 15873157315849. The next prime is 15873157315877. The reversal of 15873157315873 is 37851375137851.

It can be written as a sum of positive squares in 2 ways, for example, as 5763759013089 + 10109398302784 = 2400783^2 + 3179528^2 .

It is not a de Polignac number, because 15873157315873 - 2³³ = 15864567381281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15873157315877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5045502978 + ... + 5045506123.

Almost surely, 2^{15873157315873} is an apocalyptic number.

15873157315873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15873157315873 is a deficient number, since it is larger than the sum of its proper divisors (2916301632051).

15873157315873 is a wasteful number, since it uses less digits than its factorization.

15873157315873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091009136 (or 10091009125 counting only the distinct ones).

The product of its digits is 74088000, while the sum is 64.

The spelling of 15873157315873 in words is "fifteen trillion, eight hundred seventy-three billion, one hundred fifty-seven million, three hundred fifteen thousand, eight hundred seventy-three".