20369296957 has 2 divisors, whose sum is σ = 20369296958. Its totient is φ = 20369296956.

The previous prime is 20369296951. The next prime is 20369296967. The reversal of 20369296957 is 75969296302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17512287556 + 2857009401 = 132334^2 + 53451^2 .

It is a cyclic number.

It is not a de Polignac number, because 20369296957 - 2²³ = 20360908349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20369296951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10184648478 + 10184648479.

It is an arithmetic number, because the mean of its divisors is an integer number (10184648479).

Almost surely, 2^20369296957 is an apocalyptic number.

It is an amenable number.

20369296957 is a deficient number, since it is larger than the sum of its proper divisors (1).

20369296957 is an equidigital number, since it uses as much as digits as its factorization.

20369296957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11022480, while the sum is 58.

The spelling of 20369296957 in words is "twenty billion, three hundred sixty-nine million, two hundred ninety-six thousand, nine hundred fifty-seven".