6121530045391 has 2 divisors, whose sum is σ = 6121530045392. Its totient is φ = 6121530045390.

The previous prime is 6121530045377. The next prime is 6121530045431. The reversal of 6121530045391 is 1935400351216.

It is a happy number.

It is an a-pointer prime, because the next prime (6121530045431) can be obtained adding 6121530045391 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6121530045391 - 2⁷ = 6121530045263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6121530045341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060765022695 + 3060765022696.

It is an arithmetic number, because the mean of its divisors is an integer number (3060765022696).

Almost surely, 2^{6121530045391} is an apocalyptic number.

6121530045391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6121530045391 is an equidigital number, since it uses as much as digits as its factorization.

6121530045391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 6121530045391 in words is "six trillion, one hundred twenty-one billion, five hundred thirty million, forty-five thousand, three hundred ninety-one".