71212525671 has 16 divisors (see below), whose sum is σ = 109821729024. Its totient is φ = 40202595264.

The previous prime is 71212525667. The next prime is 71212525729. The reversal of 71212525671 is 17652521217.

It is not a de Polignac number, because 71212525671 - 2² = 71212525667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71212525651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20426406 + ... + 20429891.

It is an arithmetic number, because the mean of its divisors is an integer number (6863858064).

Almost surely, 2^71212525671 is an apocalyptic number.

71212525671 is a deficient number, since it is larger than the sum of its proper divisors (38609203353).

71212525671 is a wasteful number, since it uses less digits than its factorization.

71212525671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40856390.

The product of its digits is 58800, while the sum is 39.

The spelling of 71212525671 in words is "seventy-one billion, two hundred twelve million, five hundred twenty-five thousand, six hundred seventy-one".