1579917115803 has 18 divisors (see below), whose sum is σ = 2281104627996. Its totient is φ = 972239269872.

The previous prime is 1579917115783. The next prime is 1579917115831. The reversal of 1579917115803 is 3085117199751.

It is not a de Polignac number, because 1579917115803 - 2⁶ = 1579917115739 is a prime.

It is a super-2 number, since 2×1579917115803² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1579917115003) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 28274350 + ... + 28330172.

Almost surely, 2^{1579917115803} is an apocalyptic number.

1579917115803 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1579917115803 is a deficient number, since it is larger than the sum of its proper divisors (701187512193).

1579917115803 is an frugal number, since it uses more digits than its factorization.

1579917115803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111675 (or 55839 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 57.

The spelling of 1579917115803 in words is "one trillion, five hundred seventy-nine billion, nine hundred seventeen million, one hundred fifteen thousand, eight hundred three".