20962665877 has 2 divisors, whose sum is σ = 20962665878. Its totient is φ = 20962665876.

The previous prime is 20962665833. The next prime is 20962665923. The reversal of 20962665877 is 77856626902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20818449796 + 144216081 = 144286^2 + 12009^2 .

It is a cyclic number.

It is not a de Polignac number, because 20962665877 - 2¹¹ = 20962663829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20962665827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10481332938 + 10481332939.

It is an arithmetic number, because the mean of its divisors is an integer number (10481332939).

Almost surely, 2^20962665877 is an apocalyptic number.

It is an amenable number.

20962665877 is a deficient number, since it is larger than the sum of its proper divisors (1).

20962665877 is an equidigital number, since it uses as much as digits as its factorization.

20962665877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 20962665877 in words is "twenty billion, nine hundred sixty-two million, six hundred sixty-five thousand, eight hundred seventy-seven".