72816217721343 has 6 divisors (see below), whose sum is σ = 105178981153064. Its totient is φ = 48544145147556.

The previous prime is 72816217721341. The next prime is 72816217721383. The reversal of 72816217721343 is 34312771261827.

72816217721343 is a `hidden beast` number, since 7 + 2 + 8 + 1 + 621 + 7 + 7 + 2 + 1 + 3 + 4 + 3 = 666.

It is not a de Polignac number, because 72816217721343 - 2¹ = 72816217721341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72816217721343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72816217721341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4045345428955 + ... + 4045345428972.

Almost surely, 2^{72816217721343} is an apocalyptic number.

72816217721343 is a deficient number, since it is larger than the sum of its proper divisors (32362763431721).

72816217721343 is a wasteful number, since it uses less digits than its factorization.

72816217721343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8090690857933 (or 8090690857930 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The spelling of 72816217721343 in words is "seventy-two trillion, eight hundred sixteen billion, two hundred seventeen million, seven hundred twenty-one thousand, three hundred forty-three".