75003520520081 has 2 divisors, whose sum is σ = 75003520520082. Its totient is φ = 75003520520080.

The previous prime is 75003520520011. The next prime is 75003520520129. The reversal of 75003520520081 is 18002502530057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74967890560000 + 35629960081 = 8658400^2 + 188759^2 .

It is a cyclic number.

It is not a de Polignac number, because 75003520520081 - 2¹⁴ = 75003520503697 is a prime.

It is a super-2 number, since 2×75003520520081² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (75003520520011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37501760260040 + 37501760260041.

It is an arithmetic number, because the mean of its divisors is an integer number (37501760260041).

Almost surely, 2^{75003520520081} is an apocalyptic number.

It is an amenable number.

75003520520081 is a deficient number, since it is larger than the sum of its proper divisors (1).

75003520520081 is an equidigital number, since it uses as much as digits as its factorization.

75003520520081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84000, while the sum is 38.

The spelling of 75003520520081 in words is "seventy-five trillion, three billion, five hundred twenty million, five hundred twenty thousand, eighty-one".