72417635457 has 8 divisors (see below), whose sum is σ = 96627798240. Its totient is φ = 48242948160.

The previous prime is 72417635449. The next prime is 72417635471. The reversal of 72417635457 is 75453671427.

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

It is not a de Polignac number, because 72417635457 - 2³ = 72417635449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72417635957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8864107 + ... + 8872272.

It is an arithmetic number, because the mean of its divisors is an integer number (12078474780).

Almost surely, 2^72417635457 is an apocalyptic number.

It is an amenable number.

72417635457 is a deficient number, since it is larger than the sum of its proper divisors (24210162783).

72417635457 is a wasteful number, since it uses less digits than its factorization.

72417635457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17737743.

The product of its digits is 4939200, while the sum is 51.

The spelling of 72417635457 in words is "seventy-two billion, four hundred seventeen million, six hundred thirty-five thousand, four hundred fifty-seven".