32828577781 has 2 divisors, whose sum is σ = 32828577782. Its totient is φ = 32828577780.

The previous prime is 32828577737. The next prime is 32828577839. The reversal of 32828577781 is 18777582823.

It is an a-pointer prime, because the next prime (32828577839) can be obtained adding 32828577781 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29837034756 + 2991543025 = 172734^2 + 54695^2 .

It is an emirp because it is prime and its reverse (18777582823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32828577781 - 2²⁷ = 32694360053 is a prime.

It is a super-2 number, since 2×32828577781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32828577181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16414288890 + 16414288891.

It is an arithmetic number, because the mean of its divisors is an integer number (16414288891).

Almost surely, 2^32828577781 is an apocalyptic number.

It is an amenable number.

32828577781 is a deficient number, since it is larger than the sum of its proper divisors (1).

32828577781 is an equidigital number, since it uses as much as digits as its factorization.

32828577781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10536960, while the sum is 58.

The spelling of 32828577781 in words is "thirty-two billion, eight hundred twenty-eight million, five hundred seventy-seven thousand, seven hundred eighty-one".