113420815786 has 4 divisors (see below), whose sum is σ = 170131223682. Its totient is φ = 56710407892.

The previous prime is 113420815771. The next prime is 113420815793. The reversal of 113420815786 is 687518024311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 687518024311 = 1283 ⋅535867517.

It can be written as a sum of positive squares in only one way, i.e., 113094327025 + 326488761 = 336295^2 + 18069^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 28355203945 + ... + 28355203948.

Almost surely, 2^113420815786 is an apocalyptic number.

113420815786 is a deficient number, since it is larger than the sum of its proper divisors (56710407896).

113420815786 is an equidigital number, since it uses as much as digits as its factorization.

113420815786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56710407895.

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 113420815786 in words is "one hundred thirteen billion, four hundred twenty million, eight hundred fifteen thousand, seven hundred eighty-six".