6121338577 has 2 divisors, whose sum is σ = 6121338578. Its totient is φ = 6121338576.

The previous prime is 6121338493. The next prime is 6121338607. The reversal of 6121338577 is 7758331216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4799579841 + 1321758736 = 69279^2 + 36356^2 .

It is a cyclic number.

It is not a de Polignac number, because 6121338577 - 2⁷ = 6121338449 is a prime.

It is not a weakly prime, because it can be changed into another prime (6121338877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060669288 + 3060669289.

It is an arithmetic number, because the mean of its divisors is an integer number (3060669289).

Almost surely, 2^6121338577 is an apocalyptic number.

It is an amenable number.

6121338577 is a deficient number, since it is larger than the sum of its proper divisors (1).

6121338577 is an equidigital number, since it uses as much as digits as its factorization.

6121338577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 6121338577 is about 78238.9837421218. The cubic root of 6121338577 is about 1829.2882036719.

The spelling of 6121338577 in words is "six billion, one hundred twenty-one million, three hundred thirty-eight thousand, five hundred seventy-seven".