75027073081 has 2 divisors, whose sum is σ = 75027073082. Its totient is φ = 75027073080.

The previous prime is 75027073049. The next prime is 75027073129. The reversal of 75027073081 is 18037072057.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64312960000 + 10714113081 = 253600^2 + 103509^2 .

It is an emirp because it is prime and its reverse (18037072057) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75027073081 - 2⁵ = 75027073049 is a prime.

It is a super-2 number, since 2×75027073081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75027073001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37513536540 + 37513536541.

It is an arithmetic number, because the mean of its divisors is an integer number (37513536541).

Almost surely, 2^75027073081 is an apocalyptic number.

It is an amenable number.

75027073081 is a deficient number, since it is larger than the sum of its proper divisors (1).

75027073081 is an equidigital number, since it uses as much as digits as its factorization.

75027073081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82320, while the sum is 40.

The spelling of 75027073081 in words is "seventy-five billion, twenty-seven million, seventy-three thousand, eighty-one".