11057223631661 has 4 divisors (see below), whose sum is σ = 11063641058592. Its totient is φ = 11050806204732.

The previous prime is 11057223631639. The next prime is 11057223631681. The reversal of 11057223631661 is 16613632275011.

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 a de Polignac number, because none of the positive numbers 2^k-11057223631661 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 (11057223631681) 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, 3208710881 + ... + 3208714326.

It is an arithmetic number, because the mean of its divisors is an integer number (2765910264648).

Almost surely, 2^{11057223631661} is an apocalyptic number.

It is an amenable number.

11057223631661 is a deficient number, since it is larger than the sum of its proper divisors (6417426931).

11057223631661 is an equidigital number, since it uses as much as digits as its factorization.

11057223631661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6417426930.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 11057223631661 in words is "eleven trillion, fifty-seven billion, two hundred twenty-three million, six hundred thirty-one thousand, six hundred sixty-one".