71121645486 has 40 divisors (see below), whose sum is σ = 164860530120. Its totient is φ = 22889723472.

The previous prime is 71121645479. The next prime is 71121645527. The reversal of 71121645486 is 68454612117.

71121645486 is a `hidden beast` number, since 7 + 1 + 1 + 2 + 164 + 5 + 486 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7564656 + ... + 7574051.

It is an arithmetic number, because the mean of its divisors is an integer number (4121513253).

Almost surely, 2^71121645486 is an apocalyptic number.

71121645486 is an abundant number, since it is smaller than the sum of its proper divisors (93738884634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71121645486 is a wasteful number, since it uses less digits than its factorization.

71121645486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15138750 (or 15138741 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The spelling of 71121645486 in words is "seventy-one billion, one hundred twenty-one million, six hundred forty-five thousand, four hundred eighty-six".