11368121257 has 2 divisors, whose sum is σ = 11368121258. Its totient is φ = 11368121256.

The previous prime is 11368121213. The next prime is 11368121263. The reversal of 11368121257 is 75212186311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8052549696 + 3315571561 = 89736^2 + 57581^2 .

It is a cyclic number.

It is not a de Polignac number, because 11368121257 - 2¹¹ = 11368119209 is a prime.

It is a super-3 number, since 3×11368121257³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11368101257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5684060628 + 5684060629.

It is an arithmetic number, because the mean of its divisors is an integer number (5684060629).

Almost surely, 2^11368121257 is an apocalyptic number.

It is an amenable number.

11368121257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11368121257 is an equidigital number, since it uses as much as digits as its factorization.

11368121257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The spelling of 11368121257 in words is "eleven billion, three hundred sixty-eight million, one hundred twenty-one thousand, two hundred fifty-seven".