72581507327 has 24 divisors (see below), whose sum is σ = 92695690656. Its totient is φ = 55471371264.

The previous prime is 72581507309. The next prime is 72581507329. The reversal of 72581507327 is 72370518527.

It is a de Polignac number, because none of the positive numbers 2^k-72581507327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72581507329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 801818 + ... + 887735.

It is an arithmetic number, because the mean of its divisors is an integer number (3862320444).

Almost surely, 2^72581507327 is an apocalyptic number.

72581507327 is a deficient number, since it is larger than the sum of its proper divisors (20114183329).

72581507327 is a wasteful number, since it uses less digits than its factorization.

72581507327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689615 (or 1689596 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 47.

The spelling of 72581507327 in words is "seventy-two billion, five hundred eighty-one million, five hundred seven thousand, three hundred twenty-seven".