11481621727 has 4 divisors (see below), whose sum is σ = 11669845096. Its totient is φ = 11293398360.

The previous prime is 11481621719. The next prime is 11481621731. The reversal of 11481621727 is 72712618411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11481621727 - 2³ = 11481621719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11481621727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11481621757) 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, 94111593 + ... + 94111714.

It is an arithmetic number, because the mean of its divisors is an integer number (2917461274).

Almost surely, 2^11481621727 is an apocalyptic number.

11481621727 is a deficient number, since it is larger than the sum of its proper divisors (188223369).

11481621727 is an equidigital number, since it uses as much as digits as its factorization.

11481621727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188223368.

The product of its digits is 37632, while the sum is 40.

The spelling of 11481621727 in words is "eleven billion, four hundred eighty-one million, six hundred twenty-one thousand, seven hundred twenty-seven".