402755445857 has 2 divisors, whose sum is σ = 402755445858. Its totient is φ = 402755445856.

The previous prime is 402755445769. The next prime is 402755445863. The reversal of 402755445857 is 758544557204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 393240613921 + 9514831936 = 627089^2 + 97544^2 .

It is a cyclic number.

It is not a de Polignac number, because 402755445857 - 2²⁴ = 402738668641 is a prime.

It is not a weakly prime, because it can be changed into another prime (402755441857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201377722928 + 201377722929.

It is an arithmetic number, because the mean of its divisors is an integer number (201377722929).

Almost surely, 2^402755445857 is an apocalyptic number.

It is an amenable number.

402755445857 is a deficient number, since it is larger than the sum of its proper divisors (1).

402755445857 is an equidigital number, since it uses as much as digits as its factorization.

402755445857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360000, while the sum is 56.

The spelling of 402755445857 in words is "four hundred two billion, seven hundred fifty-five million, four hundred forty-five thousand, eight hundred fifty-seven".