71211127125 has 32 divisors (see below), whose sum is σ = 118708402176. Its totient is φ = 37910971200.

The previous prime is 71211127087. The next prime is 71211127133. The reversal of 71211127125 is 52172111217.

It is not a de Polignac number, because 71211127125 - 2¹⁷ = 71210996053 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71211127092 and 71211127101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38412 + ... + 379338.

It is an arithmetic number, because the mean of its divisors is an integer number (3709637568).

Almost surely, 2^71211127125 is an apocalyptic number.

71211127125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71211127125 is a deficient number, since it is larger than the sum of its proper divisors (47497275051).

71211127125 is a wasteful number, since it uses less digits than its factorization.

71211127125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341502 (or 341492 counting only the distinct ones).

The product of its digits is 1960, while the sum is 30.

The spelling of 71211127125 in words is "seventy-one billion, two hundred eleven million, one hundred twenty-seven thousand, one hundred twenty-five".