75840545507 has 2 divisors, whose sum is σ = 75840545508. Its totient is φ = 75840545506.

The previous prime is 75840545447. The next prime is 75840545509. The reversal of 75840545507 is 70554504857.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75840545507 is a prime.

Together with 75840545509, 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 (75840545509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37920272753 + 37920272754.

It is an arithmetic number, because the mean of its divisors is an integer number (37920272754).

Almost surely, 2^75840545507 is an apocalyptic number.

75840545507 is a deficient number, since it is larger than the sum of its proper divisors (1).

75840545507 is an equidigital number, since it uses as much as digits as its factorization.

75840545507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920000, while the sum is 50.

The spelling of 75840545507 in words is "seventy-five billion, eight hundred forty million, five hundred forty-five thousand, five hundred seven".