1109396651843 has 32 divisors (see below), whose sum is σ = 1218361580352. Its totient is φ = 1005936640000.

The previous prime is 1109396651819. The next prime is 1109396651849. The reversal of 1109396651843 is 3481566939011.

It is not a de Polignac number, because 1109396651843 - 2²⁴ = 1109379874627 is a prime.

It is a super-2 number, since 2×1109396651843² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1109396651849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231459455 + ... + 231464247.

It is an arithmetic number, because the mean of its divisors is an integer number (38073799386).

Almost surely, 2^{1109396651843} is an apocalyptic number.

1109396651843 is a deficient number, since it is larger than the sum of its proper divisors (108964928509).

1109396651843 is a wasteful number, since it uses less digits than its factorization.

1109396651843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8935.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 1109396651843 in words is "one trillion, one hundred nine billion, three hundred ninety-six million, six hundred fifty-one thousand, eight hundred forty-three".