72530771408 has 40 divisors (see below), whose sum is σ = 141332620800. Its totient is φ = 36058241664.

The previous prime is 72530771387. The next prime is 72530771419. The reversal of 72530771408 is 80417703527.

It is a congruent number.

It is an unprimeable number.

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, 2981438 + ... + 3005666.

It is an arithmetic number, because the mean of its divisors is an integer number (3533315520).

Almost surely, 2^72530771408 is an apocalyptic number.

It is an amenable number.

72530771408 is a deficient number, since it is larger than the sum of its proper divisors (68801849392).

72530771408 is a wasteful number, since it uses less digits than its factorization.

72530771408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25299 (or 25293 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 44.

The spelling of 72530771408 in words is "seventy-two billion, five hundred thirty million, seven hundred seventy-one thousand, four hundred eight".