13020251115 has 32 divisors (see below), whose sum is σ = 21085908480. Its totient is φ = 6859961856.

The previous prime is 13020251089. The next prime is 13020251137. The reversal of 13020251115 is 51115202031.

It is not a de Polignac number, because 13020251115 - 2¹⁰ = 13020250091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13020251091 and 13020251100.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 637299 + ... + 657411.

It is an arithmetic number, because the mean of its divisors is an integer number (658934640).

Almost surely, 2^13020251115 is an apocalyptic number.

13020251115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13020251115 is a deficient number, since it is larger than the sum of its proper divisors (8065657365).

13020251115 is a wasteful number, since it uses less digits than its factorization.

13020251115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20643.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 13020251115 its reverse (51115202031), we get a palindrome (64135453146).

The spelling of 13020251115 in words is "thirteen billion, twenty million, two hundred fifty-one thousand, one hundred fifteen".