20783295877 has 2 divisors, whose sum is σ = 20783295878. Its totient is φ = 20783295876.

The previous prime is 20783295853. The next prime is 20783295893. The reversal of 20783295877 is 77859238702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15856098241 + 4927197636 = 125921^2 + 70194^2 .

It is a cyclic number.

It is not a de Polignac number, because 20783295877 - 2¹¹ = 20783293829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20783295677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10391647938 + 10391647939.

It is an arithmetic number, because the mean of its divisors is an integer number (10391647939).

Almost surely, 2^20783295877 is an apocalyptic number.

It is an amenable number.

20783295877 is a deficient number, since it is larger than the sum of its proper divisors (1).

20783295877 is an equidigital number, since it uses as much as digits as its factorization.

20783295877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11854080, while the sum is 58.

The spelling of 20783295877 in words is "twenty billion, seven hundred eighty-three million, two hundred ninety-five thousand, eight hundred seventy-seven".