71047648404 has 72 divisors (see below), whose sum is σ = 192611895840. Its totient is φ = 22012765632.

The previous prime is 71047648403. The next prime is 71047648409. The reversal of 71047648404 is 40484674017.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 71047648404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71047648403) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 943662 + ... + 1016165.

It is an arithmetic number, because the mean of its divisors is an integer number (2675165220).

Almost surely, 2^71047648404 is an apocalyptic number.

It is an amenable number.

71047648404 is an abundant number, since it is smaller than the sum of its proper divisors (121564247436).

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

71047648404 is a wasteful number, since it uses less digits than its factorization.

71047648404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959909 (or 1959904 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The spelling of 71047648404 in words is "seventy-one billion, forty-seven million, six hundred forty-eight thousand, four hundred four".