72417716743645 has 128 divisors (see below), whose sum is σ = 111292534886400. Its totient is φ = 44939682627840.

The previous prime is 72417716743621. The next prime is 72417716743663. The reversal of 72417716743645 is 54634761771427.

It is a happy number.

It is not a de Polignac number, because 72417716743645 - 2²⁹ = 72417179872733 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 315069534 + ... + 315299296.

It is an arithmetic number, because the mean of its divisors is an integer number (869472928800).

Almost surely, 2^{72417716743645} is an apocalyptic number.

It is an amenable number.

72417716743645 is a deficient number, since it is larger than the sum of its proper divisors (38874818142755).

72417716743645 is a wasteful number, since it uses less digits than its factorization.

72417716743645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230080 (or 230066 counting only the distinct ones).

The product of its digits is 165957120, while the sum is 64.

The spelling of 72417716743645 in words is "seventy-two trillion, four hundred seventeen billion, seven hundred sixteen million, seven hundred forty-three thousand, six hundred forty-five".