1191198714553 has 4 divisors (see below), whose sum is σ = 1253893383760. Its totient is φ = 1128504045348.

The previous prime is 1191198714533. The next prime is 1191198714617. The reversal of 1191198714553 is 3554178911911.

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 1191198714553 - 2²⁵ = 1191165160121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1191198714494 and 1191198714503.

It is not an unprimeable number, because it can be changed into a prime (1191198714533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31347334575 + ... + 31347334612.

It is an arithmetic number, because the mean of its divisors is an integer number (313473345940).

Almost surely, 2^{1191198714553} is an apocalyptic number.

It is an amenable number.

1191198714553 is a deficient number, since it is larger than the sum of its proper divisors (62694669207).

1191198714553 is an equidigital number, since it uses as much as digits as its factorization.

1191198714553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62694669206.

The product of its digits is 1360800, while the sum is 55.

The spelling of 1191198714553 in words is "one trillion, one hundred ninety-one billion, one hundred ninety-eight million, seven hundred fourteen thousand, five hundred fifty-three".