72400340543 has 16 divisors (see below), whose sum is σ = 75827378880. Its totient is φ = 69040532736.

The previous prime is 72400340531. The next prime is 72400340549. The reversal of 72400340543 is 34504300427.

It is a cyclic number.

It is not a de Polignac number, because 72400340543 - 2⁶ = 72400340479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72400340549) 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, 736430 + ... + 828932.

It is an arithmetic number, because the mean of its divisors is an integer number (4739211180).

Almost surely, 2^72400340543 is an apocalyptic number.

72400340543 is a deficient number, since it is larger than the sum of its proper divisors (3427038337).

72400340543 is a wasteful number, since it uses less digits than its factorization.

72400340543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92866.

The product of its (nonzero) digits is 40320, while the sum is 32.

The spelling of 72400340543 in words is "seventy-two billion, four hundred million, three hundred forty thousand, five hundred forty-three".