16531032013591 has 2 divisors, whose sum is σ = 16531032013592. Its totient is φ = 16531032013590.

The previous prime is 16531032013577. The next prime is 16531032013619. The reversal of 16531032013591 is 19531023013561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16531032013591 - 2¹³ = 16531032005399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16531032013511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8265516006795 + 8265516006796.

It is an arithmetic number, because the mean of its divisors is an integer number (8265516006796).

Almost surely, 2^{16531032013591} is an apocalyptic number.

16531032013591 is a deficient number, since it is larger than the sum of its proper divisors (1).

16531032013591 is an equidigital number, since it uses as much as digits as its factorization.

16531032013591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 40.

The spelling of 16531032013591 in words is "sixteen trillion, five hundred thirty-one billion, thirty-two million, thirteen thousand, five hundred ninety-one".