113515420253 has 4 divisors (see below), whose sum is σ = 113516312700. Its totient is φ = 113514527808.

The previous prime is 113515420241. The next prime is 113515420279. The reversal of 113515420253 is 352024515311.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 22756627609 + 90758792644 = 150853^2 + 301262^2 .

It is a cyclic number.

It is not a de Polignac number, because 113515420253 - 2¹⁸ = 113515158109 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 (113515450253) 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, 215750 + ... + 523047.

It is an arithmetic number, because the mean of its divisors is an integer number (28379078175).

Almost surely, 2^113515420253 is an apocalyptic number.

It is an amenable number.

113515420253 is a deficient number, since it is larger than the sum of its proper divisors (892447).

113515420253 is an equidigital number, since it uses as much as digits as its factorization.

113515420253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892446.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 113515420253 its reverse (352024515311), we get a palindrome (465539935564).

The spelling of 113515420253 in words is "one hundred thirteen billion, five hundred fifteen million, four hundred twenty thousand, two hundred fifty-three".