72555436903 has 2 divisors, whose sum is σ = 72555436904. Its totient is φ = 72555436902.

The previous prime is 72555436843. The next prime is 72555436913. The reversal of 72555436903 is 30963455527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72555436903 - 2⁹ = 72555436391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72555436913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36277718451 + 36277718452.

It is an arithmetic number, because the mean of its divisors is an integer number (36277718452).

Almost surely, 2^72555436903 is an apocalyptic number.

72555436903 is a deficient number, since it is larger than the sum of its proper divisors (1).

72555436903 is an equidigital number, since it uses as much as digits as its factorization.

72555436903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402000, while the sum is 49.

The spelling of 72555436903 in words is "seventy-two billion, five hundred fifty-five million, four hundred thirty-six thousand, nine hundred three".