71481855127 has 2 divisors, whose sum is σ = 71481855128. Its totient is φ = 71481855126.

The previous prime is 71481855097. The next prime is 71481855143. The reversal of 71481855127 is 72155818417.

It is a strong prime.

It is an emirp because it is prime and its reverse (72155818417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71481855127 - 2³¹ = 69334371479 is a prime.

It is a super-2 number, since 2×71481855127² (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 (71481853127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35740927563 + 35740927564.

It is an arithmetic number, because the mean of its divisors is an integer number (35740927564).

Almost surely, 2^71481855127 is an apocalyptic number.

71481855127 is a deficient number, since it is larger than the sum of its proper divisors (1).

71481855127 is an equidigital number, since it uses as much as digits as its factorization.

71481855127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 627200, while the sum is 49.

The spelling of 71481855127 in words is "seventy-one billion, four hundred eighty-one million, eight hundred fifty-five thousand, one hundred twenty-seven".