850946775397 has 2 divisors, whose sum is σ = 850946775398. Its totient is φ = 850946775396.

The previous prime is 850946775377. The next prime is 850946775409. The reversal of 850946775397 is 793577649058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 807902559556 + 43044215841 = 898834^2 + 207471^2 .

It is a cyclic number.

It is not a de Polignac number, because 850946775397 - 2⁷ = 850946775269 is a prime.

It is a super-2 number, since 2×850946775397² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850946775377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425473387698 + 425473387699.

It is an arithmetic number, because the mean of its divisors is an integer number (425473387699).

Almost surely, 2^850946775397 is an apocalyptic number.

It is an amenable number.

850946775397 is a deficient number, since it is larger than the sum of its proper divisors (1).

850946775397 is an equidigital number, since it uses as much as digits as its factorization.

850946775397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400075200, while the sum is 70.

The spelling of 850946775397 in words is "eight hundred fifty billion, nine hundred forty-six million, seven hundred seventy-five thousand, three hundred ninety-seven".