80820852655061 has 2 divisors, whose sum is σ = 80820852655062. Its totient is φ = 80820852655060.

The previous prime is 80820852654967. The next prime is 80820852655099. The reversal of 80820852655061 is 16055625802808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80812800284836 + 8052370225 = 8989594^2 + 89735^2 .

It is a cyclic number.

It is not a de Polignac number, because 80820852655061 - 2²² = 80820848460757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80820852654988 and 80820852655006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80826852655061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40410426327530 + 40410426327531.

It is an arithmetic number, because the mean of its divisors is an integer number (40410426327531).

Almost surely, 2^{80820852655061} is an apocalyptic number.

It is an amenable number.

80820852655061 is a deficient number, since it is larger than the sum of its proper divisors (1).

80820852655061 is an equidigital number, since it uses as much as digits as its factorization.

80820852655061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216000, while the sum is 56.

The spelling of 80820852655061 in words is "eighty trillion, eight hundred twenty billion, eight hundred fifty-two million, six hundred fifty-five thousand, sixty-one".