72354945843 has 16 divisors (see below), whose sum is σ = 107232336000. Its totient is φ = 48218709960.

The previous prime is 72354945827. The next prime is 72354945863. The reversal of 72354945843 is 34854945327.

72354945843 is a `hidden beast` number, since 7 + 2 + 3 + 54 + 9 + 4 + 584 + 3 = 666.

It is not a de Polignac number, because 72354945843 - 2⁴ = 72354945827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72354945843.

It is not an unprimeable number, because it can be changed into a prime (72354945863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423573 + ... + 569318.

It is an arithmetic number, because the mean of its divisors is an integer number (6702021000).

Almost surely, 2^72354945843 is an apocalyptic number.

72354945843 is a deficient number, since it is larger than the sum of its proper divisors (34877390157).

72354945843 is a wasteful number, since it uses less digits than its factorization.

72354945843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995599 (or 995593 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 54.

The spelling of 72354945843 in words is "seventy-two billion, three hundred fifty-four million, nine hundred forty-five thousand, eight hundred forty-three".