11274321557 has 2 divisors, whose sum is σ = 11274321558. Its totient is φ = 11274321556.

The previous prime is 11274321551. The next prime is 11274321563. The reversal of 11274321557 is 75512347211.

It is a balanced prime because it is at equal distance from previous prime (11274321551) and next prime (11274321563).

It can be written as a sum of positive squares in only one way, i.e., 9597337156 + 1676984401 = 97966^2 + 40951^2 .

It is a cyclic number.

It is not a de Polignac number, because 11274321557 - 2⁸ = 11274321301 is a prime.

It is a super-2 number, since 2×11274321557² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11274321557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11274321551) 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 as a sum of consecutive naturals, namely, 5637160778 + 5637160779.

It is an arithmetic number, because the mean of its divisors is an integer number (5637160779).

Almost surely, 2^11274321557 is an apocalyptic number.

It is an amenable number.

11274321557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11274321557 is an equidigital number, since it uses as much as digits as its factorization.

11274321557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 38.

Adding to 11274321557 its reverse (75512347211), we get a palindrome (86786668768).

The spelling of 11274321557 in words is "eleven billion, two hundred seventy-four million, three hundred twenty-one thousand, five hundred fifty-seven".