6358426661 has 2 divisors, whose sum is σ = 6358426662. Its totient is φ = 6358426660.

The previous prime is 6358426643. The next prime is 6358426673. The reversal of 6358426661 is 1666248536.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5642864161 + 715562500 = 75119^2 + 26750^2 .

It is a cyclic number.

It is not a de Polignac number, because 6358426661 - 2⁶ = 6358426597 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6358426621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3179213330 + 3179213331.

It is an arithmetic number, because the mean of its divisors is an integer number (3179213331).

Almost surely, 2^6358426661 is an apocalyptic number.

It is an amenable number.

6358426661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6358426661 is an equidigital number, since it uses as much as digits as its factorization.

6358426661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 47.

The square root of 6358426661 is about 79739.7432965519. The cubic root of 6358426661 is about 1852.6066649808.

The spelling of 6358426661 in words is "six billion, three hundred fifty-eight million, four hundred twenty-six thousand, six hundred sixty-one".