72609528405 has 8 divisors (see below), whose sum is σ = 116175245472. Its totient is φ = 38725081808.

The previous prime is 72609528403. The next prime is 72609528457. The reversal of 72609528405 is 50482590627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72609528405 - 2¹ = 72609528403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72609528403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2420317599 + ... + 2420317628.

It is an arithmetic number, because the mean of its divisors is an integer number (14521905684).

Almost surely, 2^72609528405 is an apocalyptic number.

It is an amenable number.

72609528405 is a deficient number, since it is larger than the sum of its proper divisors (43565717067).

72609528405 is a wasteful number, since it uses less digits than its factorization.

72609528405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840635235.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 72609528405 in words is "seventy-two billion, six hundred nine million, five hundred twenty-eight thousand, four hundred five".