20376936677 has 2 divisors, whose sum is σ = 20376936678. Its totient is φ = 20376936676.

The previous prime is 20376936673. The next prime is 20376936683. The reversal of 20376936677 is 77663967302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11543568481 + 8833368196 = 107441^2 + 93986^2 .

It is a cyclic number.

It is not a de Polignac number, because 20376936677 - 2² = 20376936673 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20376936673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10188468338 + 10188468339.

It is an arithmetic number, because the mean of its divisors is an integer number (10188468339).

Almost surely, 2^20376936677 is an apocalyptic number.

It is an amenable number.

20376936677 is a deficient number, since it is larger than the sum of its proper divisors (1).

20376936677 is an equidigital number, since it uses as much as digits as its factorization.

20376936677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12002256, while the sum is 56.

The spelling of 20376936677 in words is "twenty billion, three hundred seventy-six million, nine hundred thirty-six thousand, six hundred seventy-seven".