11627727621 has 4 divisors (see below), whose sum is σ = 15503636832. Its totient is φ = 7751818412.

The previous prime is 11627727619. The next prime is 11627727623. The reversal of 11627727621 is 12672772611.

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 an interprime number because it is at equal distance from previous prime (11627727619) and next prime (11627727623).

It is a cyclic number.

It is not a de Polignac number, because 11627727621 - 2¹ = 11627727619 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11627727623) 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, 1937954601 + ... + 1937954606.

It is an arithmetic number, because the mean of its divisors is an integer number (3875909208).

Almost surely, 2^11627727621 is an apocalyptic number.

It is an amenable number.

11627727621 is a deficient number, since it is larger than the sum of its proper divisors (3875909211).

11627727621 is an equidigital number, since it uses as much as digits as its factorization.

11627727621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875909210.

The product of its digits is 98784, while the sum is 42.

The spelling of 11627727621 in words is "eleven billion, six hundred twenty-seven million, seven hundred twenty-seven thousand, six hundred twenty-one".