6121975667 has 2 divisors, whose sum is σ = 6121975668. Its totient is φ = 6121975666.

The previous prime is 6121975649. The next prime is 6121975687. The reversal of 6121975667 is 7665791216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6121975667 - 2⁸ = 6121975411 is a prime.

It is not a weakly prime, because it can be changed into another prime (6121975687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060987833 + 3060987834.

It is an arithmetic number, because the mean of its divisors is an integer number (3060987834).

Almost surely, 2^6121975667 is an apocalyptic number.

6121975667 is a deficient number, since it is larger than the sum of its proper divisors (1).

6121975667 is an equidigital number, since it uses as much as digits as its factorization.

6121975667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 50.

The square root of 6121975667 is about 78243.0550719998. The cubic root of 6121975667 is about 1829.3516636912.

The spelling of 6121975667 in words is "six billion, one hundred twenty-one million, nine hundred seventy-five thousand, six hundred sixty-seven".