71081347004 has 36 divisors (see below), whose sum is σ = 130081393680. Its totient is φ = 33983526720.

The previous prime is 71081347003. The next prime is 71081347039. The reversal of 71081347004 is 40074318017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71081347003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10341689 + ... + 10348559.

Almost surely, 2^71081347004 is an apocalyptic number.

It is an amenable number.

71081347004 is a deficient number, since it is larger than the sum of its proper divisors (59000046676).

71081347004 is a wasteful number, since it uses less digits than its factorization.

71081347004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11810 (or 11785 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The spelling of 71081347004 in words is "seventy-one billion, eighty-one million, three hundred forty-seven thousand, four".