6216111457 has 2 divisors, whose sum is σ = 6216111458. Its totient is φ = 6216111456.

The previous prime is 6216111379. The next prime is 6216111467. The reversal of 6216111457 is 7541116126.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6214326561 + 1784896 = 78831^2 + 1336^2 .

It is a cyclic number.

It is not a de Polignac number, because 6216111457 - 2⁷ = 6216111329 is a prime.

It is not a weakly prime, because it can be changed into another prime (6216111467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3108055728 + 3108055729.

It is an arithmetic number, because the mean of its divisors is an integer number (3108055729).

Almost surely, 2^6216111457 is an apocalyptic number.

It is an amenable number.

6216111457 is a deficient number, since it is larger than the sum of its proper divisors (1).

6216111457 is an equidigital number, since it uses as much as digits as its factorization.

6216111457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

The square root of 6216111457 is about 78842.3202157319. The cubic root of 6216111457 is about 1838.6804749695.

The spelling of 6216111457 in words is "six billion, two hundred sixteen million, one hundred eleven thousand, four hundred fifty-seven".