71001779612 has 24 divisors (see below), whose sum is σ = 129037905360. Its totient is φ = 34143334400.

The previous prime is 71001779593. The next prime is 71001779627. The reversal of 71001779612 is 21697710017.

It is a self number, because there is not a number n which added to its sum of digits gives 71001779612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161014 + ... + 1220637.

It is an arithmetic number, because the mean of its divisors is an integer number (5376579390).

Almost surely, 2^71001779612 is an apocalyptic number.

It is an amenable number.

71001779612 is a deficient number, since it is larger than the sum of its proper divisors (58036125748).

71001779612 is a wasteful number, since it uses less digits than its factorization.

71001779612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381941 (or 2381939 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 41.

The spelling of 71001779612 in words is "seventy-one billion, one million, seven hundred seventy-nine thousand, six hundred twelve".