8051805977 has 2 divisors, whose sum is σ = 8051805978. Its totient is φ = 8051805976.

The previous prime is 8051805953. The next prime is 8051805989. The reversal of 8051805977 is 7795081508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5236548496 + 2815257481 = 72364^2 + 53059^2 .

It is a cyclic number.

It is not a de Polignac number, because 8051805977 - 2⁸ = 8051805721 is a prime.

It is not a weakly prime, because it can be changed into another prime (8051805947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4025902988 + 4025902989.

It is an arithmetic number, because the mean of its divisors is an integer number (4025902989).

Almost surely, 2^8051805977 is an apocalyptic number.

It is an amenable number.

8051805977 is a deficient number, since it is larger than the sum of its proper divisors (1).

8051805977 is an equidigital number, since it uses as much as digits as its factorization.

8051805977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 50.

The square root of 8051805977 is about 89731.8559765706. The cubic root of 8051805977 is about 2004.3078791764.

The spelling of 8051805977 in words is "eight billion, fifty-one million, eight hundred five thousand, nine hundred seventy-seven".