71815295311 has 2 divisors, whose sum is σ = 71815295312. Its totient is φ = 71815295310.

The previous prime is 71815295269. The next prime is 71815295333. The reversal of 71815295311 is 11359251817.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71815295311 - 2¹⁵ = 71815262543 is a prime.

It is a super-2 number, since 2×71815295311² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71810295311) 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, 35907647655 + 35907647656.

It is an arithmetic number, because the mean of its divisors is an integer number (35907647656).

Almost surely, 2^71815295311 is an apocalyptic number.

71815295311 is a deficient number, since it is larger than the sum of its proper divisors (1).

71815295311 is an equidigital number, since it uses as much as digits as its factorization.

71815295311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 43.

The spelling of 71815295311 in words is "seventy-one billion, eight hundred fifteen million, two hundred ninety-five thousand, three hundred eleven".