72756823423 has 2 divisors, whose sum is σ = 72756823424. Its totient is φ = 72756823422.

The previous prime is 72756823357. The next prime is 72756823459. The reversal of 72756823423 is 32432865727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72756823423 - 2²⁵ = 72723268991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72756823483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36378411711 + 36378411712.

It is an arithmetic number, because the mean of its divisors is an integer number (36378411712).

Almost surely, 2^72756823423 is an apocalyptic number.

72756823423 is a deficient number, since it is larger than the sum of its proper divisors (1).

72756823423 is an equidigital number, since it uses as much as digits as its factorization.

72756823423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 49.

The spelling of 72756823423 in words is "seventy-two billion, seven hundred fifty-six million, eight hundred twenty-three thousand, four hundred twenty-three".