1113428823681 has 32 divisors (see below), whose sum is σ = 1499949360000. Its totient is φ = 734636574720.

The previous prime is 1113428823613. The next prime is 1113428823691. The reversal of 1113428823681 is 1863288243111.

It is not a de Polignac number, because 1113428823681 - 2¹⁸ = 1113428561537 is a prime.

It is a super-2 number, since 2×1113428823681² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1113428823681.

It is not an unprimeable number, because it can be changed into a prime (1113428823691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366137521 + ... + 366140561.

It is an arithmetic number, because the mean of its divisors is an integer number (46873417500).

Almost surely, 2^{1113428823681} is an apocalyptic number.

It is an amenable number.

1113428823681 is a deficient number, since it is larger than the sum of its proper divisors (386520536319).

1113428823681 is a wasteful number, since it uses less digits than its factorization.

1113428823681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5889.

The product of its digits is 442368, while the sum is 48.

The spelling of 1113428823681 in words is "one trillion, one hundred thirteen billion, four hundred twenty-eight million, eight hundred twenty-three thousand, six hundred eighty-one".