71572000481 has 2 divisors, whose sum is σ = 71572000482. Its totient is φ = 71572000480.

The previous prime is 71572000469. The next prime is 71572000501. The reversal of 71572000481 is 18400027517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71558925025 + 13075456 = 267505^2 + 3616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71572000481 is a prime.

It is a super-2 number, since 2×71572000481² (a number of 23 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 (71572008481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35786000240 + 35786000241.

It is an arithmetic number, because the mean of its divisors is an integer number (35786000241).

Almost surely, 2^71572000481 is an apocalyptic number.

It is an amenable number.

71572000481 is a deficient number, since it is larger than the sum of its proper divisors (1).

71572000481 is an equidigital number, since it uses as much as digits as its factorization.

71572000481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 35.

Adding to 71572000481 its reverse (18400027517), we get a palindrome (89972027998).

The spelling of 71572000481 in words is "seventy-one billion, five hundred seventy-two million, four hundred eighty-one", and thus it is an aban number.