1119560667661 has 4 divisors (see below), whose sum is σ = 1119573937372. Its totient is φ = 1119547397952.

The previous prime is 1119560667653. The next prime is 1119560667677. The reversal of 1119560667661 is 1667660659111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63167271561 + 1056393396100 = 251331^2 + 1027810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1119560667661 - 2³ = 1119560667653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1119560667611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6507486 + ... + 6677311.

It is an arithmetic number, because the mean of its divisors is an integer number (279893484343).

Almost surely, 2^{1119560667661} is an apocalyptic number.

It is an amenable number.

1119560667661 is a deficient number, since it is larger than the sum of its proper divisors (13269711).

1119560667661 is an equidigital number, since it uses as much as digits as its factorization.

1119560667661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13269710.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 1119560667661 in words is "one trillion, one hundred nineteen billion, five hundred sixty million, six hundred sixty-seven thousand, six hundred sixty-one".