32779628561 has 2 divisors, whose sum is σ = 32779628562. Its totient is φ = 32779628560.

The previous prime is 32779628527. The next prime is 32779628579. The reversal of 32779628561 is 16582697723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26101633600 + 6677994961 = 161560^2 + 81719^2 .

It is a cyclic number.

It is not a de Polignac number, because 32779628561 - 2¹⁰ = 32779627537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32779628497 and 32779628506.

It is not a weakly prime, because it can be changed into another prime (32779628591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16389814280 + 16389814281.

It is an arithmetic number, because the mean of its divisors is an integer number (16389814281).

Almost surely, 2^32779628561 is an apocalyptic number.

It is an amenable number.

32779628561 is a deficient number, since it is larger than the sum of its proper divisors (1).

32779628561 is an equidigital number, since it uses as much as digits as its factorization.

32779628561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 56.

The spelling of 32779628561 in words is "thirty-two billion, seven hundred seventy-nine million, six hundred twenty-eight thousand, five hundred sixty-one".