113616252461 has 4 divisors (see below), whose sum is σ = 117534054300. Its totient is φ = 109698450624.

The previous prime is 113616252457. The next prime is 113616252511. The reversal of 113616252461 is 164252616311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164252616311 = 7 ⋅23464659473.

It can be written as a sum of positive squares in 2 ways, for example, as 86204483236 + 27411769225 = 293606^2 + 165565^2 .

It is a cyclic number.

It is not a de Polignac number, because 113616252461 - 2² = 113616252457 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 (113616251461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1958900876 + ... + 1958900933.

It is an arithmetic number, because the mean of its divisors is an integer number (29383513575).

Almost surely, 2^113616252461 is an apocalyptic number.

It is an amenable number.

113616252461 is a deficient number, since it is larger than the sum of its proper divisors (3917801839).

113616252461 is an equidigital number, since it uses as much as digits as its factorization.

113616252461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917801838.

The product of its digits is 51840, while the sum is 38.

Adding to 113616252461 its reverse (164252616311), we get a palindrome (277868868772).

The spelling of 113616252461 in words is "one hundred thirteen billion, six hundred sixteen million, two hundred fifty-two thousand, four hundred sixty-one".