1115667919081 has 4 divisors (see below), whose sum is σ = 1118883100752. Its totient is φ = 1112452737412.

The previous prime is 1115667919043. The next prime is 1115667919087. The reversal of 1115667919081 is 1809197665111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1115667919081 - 2²⁹ = 1115131048169 is a prime.

It is a super-2 number, since 2×1115667919081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115667919087) 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, 1607590315 + ... + 1607591008.

It is an arithmetic number, because the mean of its divisors is an integer number (279720775188).

Almost surely, 2^{1115667919081} is an apocalyptic number.

It is an amenable number.

1115667919081 is a deficient number, since it is larger than the sum of its proper divisors (3215181671).

1115667919081 is an equidigital number, since it uses as much as digits as its factorization.

1115667919081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215181670.

The product of its (nonzero) digits is 816480, while the sum is 55.

The spelling of 1115667919081 in words is "one trillion, one hundred fifteen billion, six hundred sixty-seven million, nine hundred nineteen thousand, eighty-one".