71911595123 has 2 divisors, whose sum is σ = 71911595124. Its totient is φ = 71911595122.

The previous prime is 71911595113. The next prime is 71911595137. The reversal of 71911595123 is 32159511917.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71911595123 - 2¹⁶ = 71911529587 is a prime.

It is a super-4 number, since 4×71911595123⁴ (a number of 45 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (71911595113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35955797561 + 35955797562.

It is an arithmetic number, because the mean of its divisors is an integer number (35955797562).

Almost surely, 2^71911595123 is an apocalyptic number.

71911595123 is a deficient number, since it is larger than the sum of its proper divisors (1).

71911595123 is an equidigital number, since it uses as much as digits as its factorization.

71911595123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 44.

The spelling of 71911595123 in words is "seventy-one billion, nine hundred eleven million, five hundred ninety-five thousand, one hundred twenty-three".