11513344620157 has 2 divisors, whose sum is σ = 11513344620158. Its totient is φ = 11513344620156.

The previous prime is 11513344620091. The next prime is 11513344620209. The reversal of 11513344620157 is 75102644331511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11474824277401 + 38520342756 = 3387451^2 + 196266^2 .

It is a cyclic number.

It is not a de Polignac number, because 11513344620157 - 2¹⁵ = 11513344587389 is a prime.

It is a super-2 number, since 2×11513344620157² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11513344620857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5756672310078 + 5756672310079.

It is an arithmetic number, because the mean of its divisors is an integer number (5756672310079).

Almost surely, 2^{11513344620157} is an apocalyptic number.

It is an amenable number.

11513344620157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11513344620157 is an equidigital number, since it uses as much as digits as its factorization.

11513344620157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 43.

Adding to 11513344620157 its reverse (75102644331511), we get a palindrome (86615988951668).

The spelling of 11513344620157 in words is "eleven trillion, five hundred thirteen billion, three hundred forty-four million, six hundred twenty thousand, one hundred fifty-seven".