20886774037 has 2 divisors, whose sum is σ = 20886774038. Its totient is φ = 20886774036.

The previous prime is 20886773977. The next prime is 20886774067. The reversal of 20886774037 is 73047768802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14833778436 + 6052995601 = 121794^2 + 77801^2 .

It is a cyclic number.

It is not a de Polignac number, because 20886774037 - 2⁷ = 20886773909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20886774067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10443387018 + 10443387019.

It is an arithmetic number, because the mean of its divisors is an integer number (10443387019).

Almost surely, 2^20886774037 is an apocalyptic number.

It is an amenable number.

20886774037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20886774037 is an equidigital number, since it uses as much as digits as its factorization.

20886774037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3161088, while the sum is 52.

The spelling of 20886774037 in words is "twenty billion, eight hundred eighty-six million, seven hundred seventy-four thousand, thirty-seven".