32810781061 has 2 divisors, whose sum is σ = 32810781062. Its totient is φ = 32810781060.

The previous prime is 32810781049. The next prime is 32810781131. The reversal of 32810781061 is 16018701823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32130562500 + 680218561 = 179250^2 + 26081^2 .

It is a cyclic number.

It is not a de Polignac number, because 32810781061 - 2⁹ = 32810780549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32810781061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32810781011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16405390530 + 16405390531.

It is an arithmetic number, because the mean of its divisors is an integer number (16405390531).

Almost surely, 2^32810781061 is an apocalyptic number.

It is an amenable number.

32810781061 is a deficient number, since it is larger than the sum of its proper divisors (1).

32810781061 is an equidigital number, since it uses as much as digits as its factorization.

32810781061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The spelling of 32810781061 in words is "thirty-two billion, eight hundred ten million, seven hundred eighty-one thousand, sixty-one".