11125631056621 has 4 divisors (see below), whose sum is σ = 11175521779072. Its totient is φ = 11075740334172.

The previous prime is 11125631056613. The next prime is 11125631056627. The reversal of 11125631056621 is 12665013652111.

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 11125631056621 - 2³ = 11125631056613 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 (11125631056627) 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, 24945360891 + ... + 24945361336.

It is an arithmetic number, because the mean of its divisors is an integer number (2793880444768).

Almost surely, 2^{11125631056621} is an apocalyptic number.

It is an amenable number.

11125631056621 is a deficient number, since it is larger than the sum of its proper divisors (49890722451).

11125631056621 is an equidigital number, since it uses as much as digits as its factorization.

11125631056621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49890722450.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 11125631056621 in words is "eleven trillion, one hundred twenty-five billion, six hundred thirty-one million, fifty-six thousand, six hundred twenty-one".