32261821573 has 2 divisors, whose sum is σ = 32261821574. Its totient is φ = 32261821572.

The previous prime is 32261821547. The next prime is 32261821591. The reversal of 32261821573 is 37512816223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26947848964 + 5313972609 = 164158^2 + 72897^2 .

It is a cyclic number.

It is not a de Polignac number, because 32261821573 - 2²¹ = 32259724421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32261821073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16130910786 + 16130910787.

It is an arithmetic number, because the mean of its divisors is an integer number (16130910787).

Almost surely, 2^32261821573 is an apocalyptic number.

It is an amenable number.

32261821573 is a deficient number, since it is larger than the sum of its proper divisors (1).

32261821573 is an equidigital number, since it uses as much as digits as its factorization.

32261821573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The spelling of 32261821573 in words is "thirty-two billion, two hundred sixty-one million, eight hundred twenty-one thousand, five hundred seventy-three".