72040576005 has 12 divisors (see below), whose sum is σ = 124870331820. Its totient is φ = 38421640512.

The previous prime is 72040575967. The next prime is 72040576007. The reversal of 72040576005 is 50067504027.

72040576005 is a `hidden beast` number, since 7 + 2 + 0 + 40 + 5 + 7 + 600 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11564421444 + 60476154561 = 107538^2 + 245919^2 .

It is not a de Polignac number, because 72040576005 - 2¹² = 72040571909 is a prime.

It is a super-2 number, since 2×72040576005² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72040576007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 800450800 + ... + 800450889.

It is an arithmetic number, because the mean of its divisors is an integer number (10405860985).

Almost surely, 2^72040576005 is an apocalyptic number.

It is an amenable number.

72040576005 is a deficient number, since it is larger than the sum of its proper divisors (52829755815).

72040576005 is a wasteful number, since it uses less digits than its factorization.

72040576005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600901700 (or 1600901697 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The spelling of 72040576005 in words is "seventy-two billion, forty million, five hundred seventy-six thousand, five".