611463021857 has 2 divisors, whose sum is σ = 611463021858. Its totient is φ = 611463021856.

The previous prime is 611463021839. The next prime is 611463021859. The reversal of 611463021857 is 758120364116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332255405056 + 279207616801 = 576416^2 + 528401^2 .

It is a cyclic number.

It is not a de Polignac number, because 611463021857 - 2²⁶ = 611395912993 is a prime.

Together with 611463021859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (611463021859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305731510928 + 305731510929.

It is an arithmetic number, because the mean of its divisors is an integer number (305731510929).

Almost surely, 2^611463021857 is an apocalyptic number.

It is an amenable number.

611463021857 is a deficient number, since it is larger than the sum of its proper divisors (1).

611463021857 is an equidigital number, since it uses as much as digits as its factorization.

611463021857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 611463021857 in words is "six hundred eleven billion, four hundred sixty-three million, twenty-one thousand, eight hundred fifty-seven".