72733816355 has 4 divisors (see below), whose sum is σ = 87280579632. Its totient is φ = 58187053080.

The previous prime is 72733816339. The next prime is 72733816367. The reversal of 72733816355 is 55361833727.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 72733816355 - 2⁴ = 72733816339 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7273381631 + ... + 7273381640.

It is an arithmetic number, because the mean of its divisors is an integer number (21820144908).

Almost surely, 2^72733816355 is an apocalyptic number.

72733816355 is a deficient number, since it is larger than the sum of its proper divisors (14546763277).

72733816355 is a wasteful number, since it uses less digits than its factorization.

72733816355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14546763276.

The product of its digits is 3175200, while the sum is 50.

The spelling of 72733816355 in words is "seventy-two billion, seven hundred thirty-three million, eight hundred sixteen thousand, three hundred fifty-five".