16542788047523 has 2 divisors, whose sum is σ = 16542788047524. Its totient is φ = 16542788047522.

The previous prime is 16542788047439. The next prime is 16542788047619. The reversal of 16542788047523 is 32574088724561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16542788047523 - 2²⁸ = 16542519612067 is a prime.

It is not a weakly prime, because it can be changed into another prime (16542788040523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8271394023761 + 8271394023762.

It is an arithmetic number, because the mean of its divisors is an integer number (8271394023762).

Almost surely, 2^{16542788047523} is an apocalyptic number.

16542788047523 is a deficient number, since it is larger than the sum of its proper divisors (1).

16542788047523 is an equidigital number, since it uses as much as digits as its factorization.

16542788047523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90316800, while the sum is 62.

The spelling of 16542788047523 in words is "sixteen trillion, five hundred forty-two billion, seven hundred eighty-eight million, forty-seven thousand, five hundred twenty-three".