13540657511 has 2 divisors, whose sum is σ = 13540657512. Its totient is φ = 13540657510.

The previous prime is 13540657489. The next prime is 13540657519. The reversal of 13540657511 is 11575604531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13540657511 - 2¹⁰ = 13540656487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13540657519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6770328755 + 6770328756.

It is an arithmetic number, because the mean of its divisors is an integer number (6770328756).

Almost surely, 2^13540657511 is an apocalyptic number.

13540657511 is a deficient number, since it is larger than the sum of its proper divisors (1).

13540657511 is an equidigital number, since it uses as much as digits as its factorization.

13540657511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 13540657511 in words is "thirteen billion, five hundred forty million, six hundred fifty-seven thousand, five hundred eleven".