1092899645561 has 4 divisors (see below), whose sum is σ = 1118315916432. Its totient is φ = 1067483374692.

The previous prime is 1092899645549. The next prime is 1092899645581. The reversal of 1092899645561 is 1655469982901.

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 1092899645561 - 2³⁴ = 1075719776377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1092899645521) 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, 12708135371 + ... + 12708135456.

It is an arithmetic number, because the mean of its divisors is an integer number (279578979108).

Almost surely, 2^{1092899645561} is an apocalyptic number.

It is an amenable number.

1092899645561 is a deficient number, since it is larger than the sum of its proper divisors (25416270871).

1092899645561 is an equidigital number, since it uses as much as digits as its factorization.

1092899645561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25416270870.

The product of its (nonzero) digits is 41990400, while the sum is 65.

The spelling of 1092899645561 in words is "one trillion, ninety-two billion, eight hundred ninety-nine million, six hundred forty-five thousand, five hundred sixty-one".