13775748487 has 2 divisors, whose sum is σ = 13775748488. Its totient is φ = 13775748486.

The previous prime is 13775748451. The next prime is 13775748557. The reversal of 13775748487 is 78484757731.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13775748487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13775748187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6887874243 + 6887874244.

It is an arithmetic number, because the mean of its divisors is an integer number (6887874244).

Almost surely, 2^13775748487 is an apocalyptic number.

13775748487 is a deficient number, since it is larger than the sum of its proper divisors (1).

13775748487 is an equidigital number, since it uses as much as digits as its factorization.

13775748487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36879360, while the sum is 61.

The spelling of 13775748487 in words is "thirteen billion, seven hundred seventy-five million, seven hundred forty-eight thousand, four hundred eighty-seven".