11015640523 has 2 divisors, whose sum is σ = 11015640524. Its totient is φ = 11015640522.

The previous prime is 11015640521. The next prime is 11015640527. The reversal of 11015640523 is 32504651011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11015640523 - 2¹ = 11015640521 is a prime.

It is a super-2 number, since 2×11015640523² (a number of 21 digits) contains 22 as substring.

Together with 11015640521, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11015640491 and 11015640500.

It is not a weakly prime, because it can be changed into another prime (11015640521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5507820261 + 5507820262.

It is an arithmetic number, because the mean of its divisors is an integer number (5507820262).

Almost surely, 2^11015640523 is an apocalyptic number.

11015640523 is a deficient number, since it is larger than the sum of its proper divisors (1).

11015640523 is an equidigital number, since it uses as much as digits as its factorization.

11015640523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 11015640523 in words is "eleven billion, fifteen million, six hundred forty thousand, five hundred twenty-three".