71520051040 has 48 divisors (see below), whose sum is σ = 168993194832. Its totient is φ = 28603436544.

The previous prime is 71520051023. The next prime is 71520051041. The reversal of 71520051040 is 4015002517.

It is a junction number, because it is equal to n+sod(n) for n = 71520050996 and 71520051014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71520051041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1072762 + ... + 1137478.

It is an arithmetic number, because the mean of its divisors is an integer number (3520691559).

Almost surely, 2^71520051040 is an apocalyptic number.

It is an amenable number.

71520051040 is an abundant number, since it is smaller than the sum of its proper divisors (97473143792).

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

71520051040 is a wasteful number, since it uses less digits than its factorization.

71520051040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71639 (or 71631 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

Adding to 71520051040 its reverse (4015002517), we get a palindrome (75535053557).

The spelling of 71520051040 in words is "seventy-one billion, five hundred twenty million, fifty-one thousand, forty".