851154440053 has 2 divisors, whose sum is σ = 851154440054. Its totient is φ = 851154440052.

The previous prime is 851154440041. The next prime is 851154440069. The reversal of 851154440053 is 350044451158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 683859533764 + 167294906289 = 826958^2 + 409017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-851154440053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 851154439988 and 851154440015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (851154440083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425577220026 + 425577220027.

It is an arithmetic number, because the mean of its divisors is an integer number (425577220027).

Almost surely, 2^851154440053 is an apocalyptic number.

It is an amenable number.

851154440053 is a deficient number, since it is larger than the sum of its proper divisors (1).

851154440053 is an equidigital number, since it uses as much as digits as its factorization.

851154440053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192000, while the sum is 40.

The spelling of 851154440053 in words is "eight hundred fifty-one billion, one hundred fifty-four million, four hundred forty thousand, fifty-three".