72391216454 has 8 divisors (see below), whose sum is σ = 108589843488. Its totient is φ = 36194601960.

The previous prime is 72391216453. The next prime is 72391216459. The reversal of 72391216454 is 45461219327.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72391216451) 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, 409742 + ... + 559169.

It is an arithmetic number, because the mean of its divisors is an integer number (13573730436).

Almost surely, 2^72391216454 is an apocalyptic number.

72391216454 is a deficient number, since it is larger than the sum of its proper divisors (36198627034).

72391216454 is a wasteful number, since it uses less digits than its factorization.

72391216454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006270.

The product of its digits is 362880, while the sum is 44.

The spelling of 72391216454 in words is "seventy-two billion, three hundred ninety-one million, two hundred sixteen thousand, four hundred fifty-four".