32538356861 has 2 divisors, whose sum is σ = 32538356862. Its totient is φ = 32538356860.

The previous prime is 32538356821. The next prime is 32538356897. The reversal of 32538356861 is 16865383523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32231020900 + 307335961 = 179530^2 + 17531^2 .

It is a cyclic number.

It is not a de Polignac number, because 32538356861 - 2²⁶ = 32471247997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32538356821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16269178430 + 16269178431.

It is an arithmetic number, because the mean of its divisors is an integer number (16269178431).

Almost surely, 2^32538356861 is an apocalyptic number.

It is an amenable number.

32538356861 is a deficient number, since it is larger than the sum of its proper divisors (1).

32538356861 is an equidigital number, since it uses as much as digits as its factorization.

32538356861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 50.

The spelling of 32538356861 in words is "thirty-two billion, five hundred thirty-eight million, three hundred fifty-six thousand, eight hundred sixty-one".