32021802405961 has 3 divisors (see below), whose sum is σ = 32021808064743. Its totient is φ = 32021796747180.

The previous prime is 32021802405953. The next prime is 32021802405991. The reversal of 32021802405961 is 16950420812023.

The square root of 32021802405961 is 5658781.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1141331125561 + 30880471280400 = 1068331^2 + 5557020^2 .

It is not a de Polignac number, because 32021802405961 - 2³ = 32021802405953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32021802405941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2829391 + ... + 8488171.

It is an arithmetic number, because the mean of its divisors is an integer number (10673936021581).

Almost surely, 2^{32021802405961} is an apocalyptic number.

32021802405961 is the 5658781-st square number.

32021802405961 is the 2829391-st centered octagonal number.

It is an amenable number.

32021802405961 is a deficient number, since it is larger than the sum of its proper divisors (5658782).

32021802405961 is an frugal number, since it uses more digits than its factorization.

32021802405961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11317562 (or 5658781 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 32021802405961 in words is "thirty-two trillion, twenty-one billion, eight hundred two million, four hundred five thousand, nine hundred sixty-one".