75012421091 has 2 divisors, whose sum is σ = 75012421092. Its totient is φ = 75012421090.

The previous prime is 75012421079. The next prime is 75012421093. The reversal of 75012421091 is 19012421057.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75012421091 is a prime.

Together with 75012421093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75012421093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37506210545 + 37506210546.

It is an arithmetic number, because the mean of its divisors is an integer number (37506210546).

Almost surely, 2^75012421091 is an apocalyptic number.

75012421091 is a deficient number, since it is larger than the sum of its proper divisors (1).

75012421091 is an equidigital number, since it uses as much as digits as its factorization.

75012421091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 75012421091 in words is "seventy-five billion, twelve million, four hundred twenty-one thousand, ninety-one".