113772978851 has 4 divisors (see below), whose sum is σ = 130026261552. Its totient is φ = 97519696152.

The previous prime is 113772978817. The next prime is 113772978857. The reversal of 113772978851 is 158879277311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113772978851 - 2¹⁴ = 113772962467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113772978857) 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, 8126641340 + ... + 8126641353.

It is an arithmetic number, because the mean of its divisors is an integer number (32506565388).

Almost surely, 2^113772978851 is an apocalyptic number.

113772978851 is a deficient number, since it is larger than the sum of its proper divisors (16253282701).

113772978851 is an equidigital number, since it uses as much as digits as its factorization.

113772978851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16253282700.

The product of its digits is 5927040, while the sum is 59.

The spelling of 113772978851 in words is "one hundred thirteen billion, seven hundred seventy-two million, nine hundred seventy-eight thousand, eight hundred fifty-one".