13923520487 has 2 divisors, whose sum is σ = 13923520488. Its totient is φ = 13923520486.

The previous prime is 13923520453. The next prime is 13923520517. The reversal of 13923520487 is 78402532931.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (78402532931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13923520487 - 2²⁰ = 13922471911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13923520427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6961760243 + 6961760244.

It is an arithmetic number, because the mean of its divisors is an integer number (6961760244).

Almost surely, 2^13923520487 is an apocalyptic number.

13923520487 is a deficient number, since it is larger than the sum of its proper divisors (1).

13923520487 is an equidigital number, since it uses as much as digits as its factorization.

13923520487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 13923520487 in words is "thirteen billion, nine hundred twenty-three million, five hundred twenty thousand, four hundred eighty-seven".