71039419420 has 12 divisors (see below), whose sum is σ = 149182780824. Its totient is φ = 28415767760.

The previous prime is 71039419397. The next prime is 71039419421. The reversal of 71039419420 is 2491493017.

It is a super-2 number, since 2×71039419420² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71039419421) 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 3 ways as a sum of consecutive naturals, for example, 1775985466 + ... + 1775985505.

It is an arithmetic number, because the mean of its divisors is an integer number (12431898402).

Almost surely, 2^71039419420 is an apocalyptic number.

It is an amenable number.

71039419420 is an abundant number, since it is smaller than the sum of its proper divisors (78143361404).

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

71039419420 is a wasteful number, since it uses less digits than its factorization.

71039419420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551970980 (or 3551970978 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 71039419420 in words is "seventy-one billion, thirty-nine million, four hundred nineteen thousand, four hundred twenty".