16432523512861 has 2 divisors, whose sum is σ = 16432523512862. Its totient is φ = 16432523512860.

The previous prime is 16432523512739. The next prime is 16432523512879. The reversal of 16432523512861 is 16821532523461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14854711180761 + 1577812332100 = 3854181^2 + 1256110^2 .

It is a cyclic number.

It is not a de Polignac number, because 16432523512861 - 2¹⁷ = 16432523381789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16432523512661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8216261756430 + 8216261756431.

It is an arithmetic number, because the mean of its divisors is an integer number (8216261756431).

Almost surely, 2^{16432523512861} is an apocalyptic number.

It is an amenable number.

16432523512861 is a deficient number, since it is larger than the sum of its proper divisors (1).

16432523512861 is an equidigital number, since it uses as much as digits as its factorization.

16432523512861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 49.

The spelling of 16432523512861 in words is "sixteen trillion, four hundred thirty-two billion, five hundred twenty-three million, five hundred twelve thousand, eight hundred sixty-one".