6121326649 has 2 divisors, whose sum is σ = 6121326650. Its totient is φ = 6121326648.

The previous prime is 6121326593. The next prime is 6121326667. The reversal of 6121326649 is 9466231216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5542058025 + 579268624 = 74445^2 + 24068^2 .

It is a cyclic number.

It is not a de Polignac number, because 6121326649 - 2⁷ = 6121326521 is a prime.

It is not a weakly prime, because it can be changed into another prime (6121321649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060663324 + 3060663325.

It is an arithmetic number, because the mean of its divisors is an integer number (3060663325).

Almost surely, 2^6121326649 is an apocalyptic number.

It is an amenable number.

6121326649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6121326649 is an equidigital number, since it uses as much as digits as its factorization.

6121326649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 6121326649 is about 78238.9075141007. The cubic root of 6121326649 is about 1829.2870154914.

The spelling of 6121326649 in words is "six billion, one hundred twenty-one million, three hundred twenty-six thousand, six hundred forty-nine".