1164452156661 has 4 divisors (see below), whose sum is σ = 1552602875552. Its totient is φ = 776301437772.

The previous prime is 1164452156597. The next prime is 1164452156683. The reversal of 1164452156661 is 1666512544611.

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 not a de Polignac number, because 1164452156661 - 2⁶ = 1164452156597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1164452156661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164452156261) 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, 194075359441 + ... + 194075359446.

It is an arithmetic number, because the mean of its divisors is an integer number (388150718888).

Almost surely, 2^{1164452156661} is an apocalyptic number.

It is an amenable number.

1164452156661 is a deficient number, since it is larger than the sum of its proper divisors (388150718891).

1164452156661 is an equidigital number, since it uses as much as digits as its factorization.

1164452156661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388150718890.

The product of its digits is 1036800, while the sum is 48.

The spelling of 1164452156661 in words is "one trillion, one hundred sixty-four billion, four hundred fifty-two million, one hundred fifty-six thousand, six hundred sixty-one".