71070003720 has 128 divisors (see below), whose sum is σ = 236967177600. Its totient is φ = 18946628352.

The previous prime is 71070003689. The next prime is 71070003793. The reversal of 71070003720 is 2730007017.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5093874 + ... + 5107806.

It is an arithmetic number, because the mean of its divisors is an integer number (1851306075).

Almost surely, 2^71070003720 is an apocalyptic number.

It is an amenable number.

71070003720 is an abundant number, since it is smaller than the sum of its proper divisors (165897173880).

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

71070003720 is a wasteful number, since it uses less digits than its factorization.

71070003720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18676 (or 18666 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 27.

The spelling of 71070003720 in words is "seventy-one billion, seventy million, three thousand, seven hundred twenty".