75390328691 has 2 divisors, whose sum is σ = 75390328692. Its totient is φ = 75390328690.

The previous prime is 75390328609. The next prime is 75390328721. The reversal of 75390328691 is 19682309357.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75390328691 - 2³⁴ = 58210459507 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (75390328291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37695164345 + 37695164346.

It is an arithmetic number, because the mean of its divisors is an integer number (37695164346).

Almost surely, 2^75390328691 is an apocalyptic number.

75390328691 is a deficient number, since it is larger than the sum of its proper divisors (1).

75390328691 is an equidigital number, since it uses as much as digits as its factorization.

75390328691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 75390328691 in words is "seventy-five billion, three hundred ninety million, three hundred twenty-eight thousand, six hundred ninety-one".