72921008063 has 2 divisors, whose sum is σ = 72921008064. Its totient is φ = 72921008062.

The previous prime is 72921008057. The next prime is 72921008203. The reversal of 72921008063 is 36080012927.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72921008063 - 2⁴ = 72921008047 is a prime.

It is a super-2 number, since 2×72921008063² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72921308063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36460504031 + 36460504032.

It is an arithmetic number, because the mean of its divisors is an integer number (36460504032).

Almost surely, 2^72921008063 is an apocalyptic number.

72921008063 is a deficient number, since it is larger than the sum of its proper divisors (1).

72921008063 is an equidigital number, since it uses as much as digits as its factorization.

72921008063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 72921008063 in words is "seventy-two billion, nine hundred twenty-one million, eight thousand, sixty-three".