72040280659 has 4 divisors (see below), whose sum is σ = 72041252416. Its totient is φ = 72039308904.

The previous prime is 72040280621. The next prime is 72040280677. The reversal of 72040280659 is 95608204027.

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 72040280659 - 2²⁵ = 72006726227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72040280159) 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, 364584 + ... + 526309.

It is an arithmetic number, because the mean of its divisors is an integer number (18010313104).

Almost surely, 2^72040280659 is an apocalyptic number.

72040280659 is a deficient number, since it is larger than the sum of its proper divisors (971757).

72040280659 is an equidigital number, since it uses as much as digits as its factorization.

72040280659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971756.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 72040280659 in words is "seventy-two billion, forty million, two hundred eighty thousand, six hundred fifty-nine".