71504003140 has 24 divisors (see below), whose sum is σ = 150177809880. Its totient is φ = 28597905408.

The previous prime is 71504003119. The next prime is 71504003141. The reversal of 71504003140 is 4130040517.

It can be written as a sum of positive squares in 4 ways, for example, as 9482085376 + 62021917764 = 97376^2 + 249042^2 .

It is a super-2 number, since 2×71504003140² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71504003141) 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 7 ways as a sum of consecutive naturals, for example, 69595 + ... + 384514.

It is an arithmetic number, because the mean of its divisors is an integer number (6257408745).

Almost surely, 2^71504003140 is an apocalyptic number.

It is an amenable number.

71504003140 is an abundant number, since it is smaller than the sum of its proper divisors (78673806740).

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

71504003140 is a wasteful number, since it uses less digits than its factorization.

71504003140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461991 (or 461989 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

Adding to 71504003140 its reverse (4130040517), we get a palindrome (75634043657).

The spelling of 71504003140 in words is "seventy-one billion, five hundred four million, three thousand, one hundred forty".