71271693478 has 32 divisors (see below), whose sum is σ = 112882118400. Its totient is φ = 33656093856.

The previous prime is 71271693413. The next prime is 71271693491. The reversal of 71271693478 is 87439617217.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21028608 + ... + 21031996.

It is an arithmetic number, because the mean of its divisors is an integer number (3527566200).

Almost surely, 2^71271693478 is an apocalyptic number.

71271693478 is a deficient number, since it is larger than the sum of its proper divisors (41610424922).

71271693478 is a wasteful number, since it uses less digits than its factorization.

71271693478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4956.

The product of its digits is 3556224, while the sum is 55.

The spelling of 71271693478 in words is "seventy-one billion, two hundred seventy-one million, six hundred ninety-three thousand, four hundred seventy-eight".