75019891091 has 2 divisors, whose sum is σ = 75019891092. Its totient is φ = 75019891090.

The previous prime is 75019891049. The next prime is 75019891117. The reversal of 75019891091 is 19019891057.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75019891091 - 2¹⁰ = 75019890067 is a prime.

It is not a weakly prime, because it can be changed into another prime (75019891031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37509945545 + 37509945546.

It is an arithmetic number, because the mean of its divisors is an integer number (37509945546).

Almost surely, 2^75019891091 is an apocalyptic number.

75019891091 is a deficient number, since it is larger than the sum of its proper divisors (1).

75019891091 is an equidigital number, since it uses as much as digits as its factorization.

75019891091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 50.

The spelling of 75019891091 in words is "seventy-five billion, nineteen million, eight hundred ninety-one thousand, ninety-one".