75059382781 has 2 divisors, whose sum is σ = 75059382782. Its totient is φ = 75059382780.

The previous prime is 75059382743. The next prime is 75059382799. The reversal of 75059382781 is 18728395057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56058138756 + 19001244025 = 236766^2 + 137845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75059382781 is a prime.

It is a super-2 number, since 2×75059382781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75059385781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37529691390 + 37529691391.

It is an arithmetic number, because the mean of its divisors is an integer number (37529691391).

Almost surely, 2^75059382781 is an apocalyptic number.

It is an amenable number.

75059382781 is a deficient number, since it is larger than the sum of its proper divisors (1).

75059382781 is an equidigital number, since it uses as much as digits as its factorization.

75059382781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 75059382781 in words is "seventy-five billion, fifty-nine million, three hundred eighty-two thousand, seven hundred eighty-one".