71130490273 has 2 divisors, whose sum is σ = 71130490274. Its totient is φ = 71130490272.

The previous prime is 71130490201. The next prime is 71130490331. The reversal of 71130490273 is 37209403117.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71130490209 + 64 = 266703^2 + 8^2 .

It is a cyclic number.

It is not a de Polignac number, because 71130490273 - 2¹³ = 71130482081 is a prime.

It is a super-2 number, since 2×71130490273² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71130494273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35565245136 + 35565245137.

It is an arithmetic number, because the mean of its divisors is an integer number (35565245137).

Almost surely, 2^71130490273 is an apocalyptic number.

It is an amenable number.

71130490273 is a deficient number, since it is larger than the sum of its proper divisors (1).

71130490273 is an equidigital number, since it uses as much as digits as its factorization.

71130490273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 37.

The spelling of 71130490273 in words is "seventy-one billion, one hundred thirty million, four hundred ninety thousand, two hundred seventy-three".