800796734557 has 2 divisors, whose sum is σ = 800796734558. Its totient is φ = 800796734556.

The previous prime is 800796734533. The next prime is 800796734561. The reversal of 800796734557 is 755437697008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429268694596 + 371528039961 = 655186^2 + 609531^2 .

It is a cyclic number.

It is not a de Polignac number, because 800796734557 - 2³¹ = 798649250909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 800796734495 and 800796734504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800791734557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400398367278 + 400398367279.

It is an arithmetic number, because the mean of its divisors is an integer number (400398367279).

Almost surely, 2^800796734557 is an apocalyptic number.

It is an amenable number.

800796734557 is a deficient number, since it is larger than the sum of its proper divisors (1).

800796734557 is an equidigital number, since it uses as much as digits as its factorization.

800796734557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44452800, while the sum is 61.

The spelling of 800796734557 in words is "eight hundred billion, seven hundred ninety-six million, seven hundred thirty-four thousand, five hundred fifty-seven".