113281780877 has 4 divisors (see below), whose sum is σ = 113302371840. Its totient is φ = 113261189916.

The previous prime is 113281780849. The next prime is 113281780919. The reversal of 113281780877 is 778087182311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 778087182311 = 233 ⋅3339429967.

It is a cyclic number.

It is not a de Polignac number, because 113281780877 - 2⁶ = 113281780813 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 (113281780477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10287227 + ... + 10298232.

It is an arithmetic number, because the mean of its divisors is an integer number (28325592960).

Almost surely, 2^113281780877 is an apocalyptic number.

It is an amenable number.

113281780877 is a deficient number, since it is larger than the sum of its proper divisors (20590963).

113281780877 is an equidigital number, since it uses as much as digits as its factorization.

113281780877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20590962.

The product of its (nonzero) digits is 1053696, while the sum is 53.

The spelling of 113281780877 in words is "one hundred thirteen billion, two hundred eighty-one million, seven hundred eighty thousand, eight hundred seventy-seven".