13157484085 has 4 divisors (see below), whose sum is σ = 15788980908. Its totient is φ = 10525987264.

The previous prime is 13157484079. The next prime is 13157484089. The reversal of 13157484085 is 58048475131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1946486161 + 11210997924 = 44119^2 + 105882^2 .

It is a cyclic number.

It is not a de Polignac number, because 13157484085 - 2¹⁵ = 13157451317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13157484089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1315748404 + ... + 1315748413.

It is an arithmetic number, because the mean of its divisors is an integer number (3947245227).

Almost surely, 2^13157484085 is an apocalyptic number.

It is an amenable number.

13157484085 is a deficient number, since it is larger than the sum of its proper divisors (2631496823).

13157484085 is an equidigital number, since it uses as much as digits as its factorization.

13157484085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631496822.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 13157484085 in words is "thirteen billion, one hundred fifty-seven million, four hundred eighty-four thousand, eighty-five".