72481738465 has 16 divisors (see below), whose sum is σ = 87275344896. Its totient is φ = 57787488000.

The previous prime is 72481738453. The next prime is 72481738489. The reversal of 72481738465 is 56483718427.

It is not a de Polignac number, because 72481738465 - 2²¹ = 72479641313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2235520 + ... + 2267710.

It is an arithmetic number, because the mean of its divisors is an integer number (5454709056).

Almost surely, 2^72481738465 is an apocalyptic number.

It is an amenable number.

72481738465 is a deficient number, since it is larger than the sum of its proper divisors (14793606431).

72481738465 is a wasteful number, since it uses less digits than its factorization.

72481738465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33720.

The product of its digits is 9031680, while the sum is 55.

The spelling of 72481738465 in words is "seventy-two billion, four hundred eighty-one million, seven hundred thirty-eight thousand, four hundred sixty-five".