820751895053 has 2 divisors, whose sum is σ = 820751895054. Its totient is φ = 820751895052.

The previous prime is 820751894981. The next prime is 820751895079. The reversal of 820751895053 is 350598157028.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 819644136964 + 1107758089 = 905342^2 + 33283^2 .

It is a cyclic number.

It is not a de Polignac number, because 820751895053 - 2⁸ = 820751894797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 820751894986 and 820751895004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820751895853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410375947526 + 410375947527.

It is an arithmetic number, because the mean of its divisors is an integer number (410375947527).

Almost surely, 2^820751895053 is an apocalyptic number.

It is an amenable number.

820751895053 is a deficient number, since it is larger than the sum of its proper divisors (1).

820751895053 is an equidigital number, since it uses as much as digits as its factorization.

820751895053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024000, while the sum is 53.

The spelling of 820751895053 in words is "eight hundred twenty billion, seven hundred fifty-one million, eight hundred ninety-five thousand, fifty-three".