113978457309 has 16 divisors (see below), whose sum is σ = 152671534400. Its totient is φ = 75635669376.

The previous prime is 113978457283. The next prime is 113978457319. The reversal of 113978457309 is 903754879311.

It is not a de Polignac number, because 113978457309 - 2¹⁹ = 113977933021 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113978457319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3231282 + ... + 3266364.

It is an arithmetic number, because the mean of its divisors is an integer number (9541970900).

Almost surely, 2^113978457309 is an apocalyptic number.

It is an amenable number.

113978457309 is a deficient number, since it is larger than the sum of its proper divisors (38693077091).

113978457309 is a wasteful number, since it uses less digits than its factorization.

113978457309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40044.

The product of its (nonzero) digits is 5715360, while the sum is 57.

The spelling of 113978457309 in words is "one hundred thirteen billion, nine hundred seventy-eight million, four hundred fifty-seven thousand, three hundred nine".