20412080655677 has 2 divisors, whose sum is σ = 20412080655678. Its totient is φ = 20412080655676.

The previous prime is 20412080655619. The next prime is 20412080655749. The reversal of 20412080655677 is 77655608021402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20141237434201 + 270843221476 = 4487899^2 + 520426^2 .

It is a cyclic number.

It is not a de Polignac number, because 20412080655677 - 2³⁴ = 20394900786493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20412082655677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206040327838 + 10206040327839.

It is an arithmetic number, because the mean of its divisors is an integer number (10206040327839).

Almost surely, 2^{20412080655677} is an apocalyptic number.

It is an amenable number.

20412080655677 is a deficient number, since it is larger than the sum of its proper divisors (1).

20412080655677 is an equidigital number, since it uses as much as digits as its factorization.

20412080655677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 20412080655677 in words is "twenty trillion, four hundred twelve billion, eighty million, six hundred fifty-five thousand, six hundred seventy-seven".