72387911527 has 2 divisors, whose sum is σ = 72387911528. Its totient is φ = 72387911526.

The previous prime is 72387911417. The next prime is 72387911537. The reversal of 72387911527 is 72511978327.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72387911527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72387911537) 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, 36193955763 + 36193955764.

It is an arithmetic number, because the mean of its divisors is an integer number (36193955764).

Almost surely, 2^72387911527 is an apocalyptic number.

72387911527 is a deficient number, since it is larger than the sum of its proper divisors (1).

72387911527 is an equidigital number, since it uses as much as digits as its factorization.

72387911527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1481760, while the sum is 52.

The spelling of 72387911527 in words is "seventy-two billion, three hundred eighty-seven million, nine hundred eleven thousand, five hundred twenty-seven".