6121661604059 has 2 divisors, whose sum is σ = 6121661604060. Its totient is φ = 6121661604058.

The previous prime is 6121661603909. The next prime is 6121661604073. The reversal of 6121661604059 is 9504061661216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6121661604059 - 2²⁸ = 6121393168603 is a prime.

It is a super-2 number, since 2×6121661604059² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6121661604959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060830802029 + 3060830802030.

It is an arithmetic number, because the mean of its divisors is an integer number (3060830802030).

Almost surely, 2^{6121661604059} is an apocalyptic number.

6121661604059 is a deficient number, since it is larger than the sum of its proper divisors (1).

6121661604059 is an equidigital number, since it uses as much as digits as its factorization.

6121661604059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 6121661604059 in words is "six trillion, one hundred twenty-one billion, six hundred sixty-one million, six hundred four thousand, fifty-nine".