72507082871 has 4 divisors (see below), whose sum is σ = 72776626200. Its totient is φ = 72237539544.

The previous prime is 72507082811. The next prime is 72507082909. The reversal of 72507082871 is 17828070527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72507082871 - 2¹⁰ = 72507081847 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 (72507082811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134771261 + ... + 134771798.

It is an arithmetic number, because the mean of its divisors is an integer number (18194156550).

Almost surely, 2^72507082871 is an apocalyptic number.

72507082871 is a deficient number, since it is larger than the sum of its proper divisors (269543329).

72507082871 is a wasteful number, since it uses less digits than its factorization.

72507082871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269543328.

The product of its (nonzero) digits is 439040, while the sum is 47.

The spelling of 72507082871 in words is "seventy-two billion, five hundred seven million, eighty-two thousand, eight hundred seventy-one".