113545772761 has 4 divisors (see below), whose sum is σ = 113560563124. Its totient is φ = 113530982400.

The previous prime is 113545772759. The next prime is 113545772783. The reversal of 113545772761 is 167277545311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 167277545311 = 109 ⋅1534656379.

It can be written as a sum of positive squares in 2 ways, for example, as 49620235536 + 63925537225 = 222756^2 + 252835^2 .

It is a cyclic number.

It is not a de Polignac number, because 113545772761 - 2¹ = 113545772759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113545772701) 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, 7383660 + ... + 7399021.

It is an arithmetic number, because the mean of its divisors is an integer number (28390140781).

Almost surely, 2^113545772761 is an apocalyptic number.

It is an amenable number.

113545772761 is a deficient number, since it is larger than the sum of its proper divisors (14790363).

113545772761 is an equidigital number, since it uses as much as digits as its factorization.

113545772761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14790362.

The product of its digits is 1234800, while the sum is 49.

The spelling of 113545772761 in words is "one hundred thirteen billion, five hundred forty-five million, seven hundred seventy-two thousand, seven hundred sixty-one".