71856482257478 has 4 divisors (see below), whose sum is σ = 107784723386220. Its totient is φ = 35928241128738.

The previous prime is 71856482257463. The next prime is 71856482257537. The reversal of 71856482257478 is 87475228465817.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×71856482257478³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17964120564368 + ... + 17964120564371.

It is an arithmetic number, because the mean of its divisors is an integer number (26946180846555).

Almost surely, 2^{71856482257478} is an apocalyptic number.

71856482257478 is a deficient number, since it is larger than the sum of its proper divisors (35928241128742).

71856482257478 is a wasteful number, since it uses less digits than its factorization.

71856482257478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35928241128741.

The product of its digits is 1685913600, while the sum is 74.

The spelling of 71856482257478 in words is "seventy-one trillion, eight hundred fifty-six billion, four hundred eighty-two million, two hundred fifty-seven thousand, four hundred seventy-eight".