11215249539157 has 2 divisors, whose sum is σ = 11215249539158. Its totient is φ = 11215249539156.

The previous prime is 11215249539119. The next prime is 11215249539181. The reversal of 11215249539157 is 75193594251211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10820672091441 + 394577447716 = 3289479^2 + 628154^2 .

It is a cyclic number.

It is not a de Polignac number, because 11215249539157 - 2⁷ = 11215249539029 is a prime.

It is a super-2 number, since 2×11215249539157² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11215249539098 and 11215249539107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11215249539757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5607624769578 + 5607624769579.

It is an arithmetic number, because the mean of its divisors is an integer number (5607624769579).

Almost surely, 2^{11215249539157} is an apocalyptic number.

It is an amenable number.

11215249539157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11215249539157 is an equidigital number, since it uses as much as digits as its factorization.

11215249539157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402000, while the sum is 55.

The spelling of 11215249539157 in words is "eleven trillion, two hundred fifteen billion, two hundred forty-nine million, five hundred thirty-nine thousand, one hundred fifty-seven".