72404840427 has 8 divisors (see below), whose sum is σ = 96542656464. Its totient is φ = 48268459008.

The previous prime is 72404840401. The next prime is 72404840429.

72404840427 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 72404840427 - 2⁶ = 72404840363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72404840429) 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, 234778 + ... + 447135.

It is an arithmetic number, because the mean of its divisors is an integer number (12067832058).

Almost surely, 2^72404840427 is an apocalyptic number.

72404840427 is a deficient number, since it is larger than the sum of its proper divisors (24137816037).

72404840427 is a wasteful number, since it uses less digits than its factorization.

72404840427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717309.

The product of its (nonzero) digits is 401408, while the sum is 42.

The spelling of 72404840427 in words is "seventy-two billion, four hundred four million, eight hundred forty thousand, four hundred twenty-seven".