11540257243 has 2 divisors, whose sum is σ = 11540257244. Its totient is φ = 11540257242.

The previous prime is 11540257229. The next prime is 11540257301. The reversal of 11540257243 is 34275204511.

It is a weak prime.

It is an emirp because it is prime and its reverse (34275204511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11540257243 - 2⁹ = 11540256731 is a prime.

It is a super-2 number, since 2×11540257243² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11540257199 and 11540257208.

It is not a weakly prime, because it can be changed into another prime (11540227243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5770128621 + 5770128622.

It is an arithmetic number, because the mean of its divisors is an integer number (5770128622).

Almost surely, 2^11540257243 is an apocalyptic number.

11540257243 is a deficient number, since it is larger than the sum of its proper divisors (1).

11540257243 is an equidigital number, since it uses as much as digits as its factorization.

11540257243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 11540257243 in words is "eleven billion, five hundred forty million, two hundred fifty-seven thousand, two hundred forty-three".