72395887439 has 2 divisors, whose sum is σ = 72395887440. Its totient is φ = 72395887438.

The previous prime is 72395887433. The next prime is 72395887451. The reversal of 72395887439 is 93478859327.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72395887439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72395887433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36197943719 + 36197943720.

It is an arithmetic number, because the mean of its divisors is an integer number (36197943720).

Almost surely, 2^72395887439 is an apocalyptic number.

72395887439 is a deficient number, since it is larger than the sum of its proper divisors (1).

72395887439 is an equidigital number, since it uses as much as digits as its factorization.

72395887439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91445760, while the sum is 65.

The spelling of 72395887439 in words is "seventy-two billion, three hundred ninety-five million, eight hundred eighty-seven thousand, four hundred thirty-nine".