71301401081 has 2 divisors, whose sum is σ = 71301401082. Its totient is φ = 71301401080.

The previous prime is 71301401069. The next prime is 71301401159. The reversal of 71301401081 is 18010410317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36773815225 + 34527585856 = 191765^2 + 185816^2 .

It is a cyclic number.

It is not a de Polignac number, because 71301401081 - 2¹⁴ = 71301384697 is a prime.

It is a super-2 number, since 2×71301401081² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 71301401081.

It is not a weakly prime, because it can be changed into another prime (71301401011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35650700540 + 35650700541.

It is an arithmetic number, because the mean of its divisors is an integer number (35650700541).

Almost surely, 2^71301401081 is an apocalyptic number.

It is an amenable number.

71301401081 is a deficient number, since it is larger than the sum of its proper divisors (1).

71301401081 is an equidigital number, since it uses as much as digits as its factorization.

71301401081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 26.

Adding to 71301401081 its reverse (18010410317), we get a palindrome (89311811398).

The spelling of 71301401081 in words is "seventy-one billion, three hundred one million, four hundred one thousand, eighty-one".