71297771055 has 32 divisors (see below), whose sum is σ = 130414385664. Its totient is φ = 32582937216.

The previous prime is 71297771033. The next prime is 71297771117. The reversal of 71297771055 is 55017779217.

It is not a de Polignac number, because 71297771055 - 2⁷ = 71297770927 is a prime.

It is a super-2 number, since 2×71297771055² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71297770989 and 71297771007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230317 + ... + 442313.

It is an arithmetic number, because the mean of its divisors is an integer number (4075449552).

Almost surely, 2^71297771055 is an apocalyptic number.

71297771055 is a deficient number, since it is larger than the sum of its proper divisors (59116614609).

71297771055 is a wasteful number, since it uses less digits than its factorization.

71297771055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215215.

The product of its (nonzero) digits is 1080450, while the sum is 51.

The spelling of 71297771055 in words is "seventy-one billion, two hundred ninety-seven million, seven hundred seventy-one thousand, fifty-five".