72636532427 has 2 divisors, whose sum is σ = 72636532428. Its totient is φ = 72636532426.

The previous prime is 72636532411. The next prime is 72636532433. The reversal of 72636532427 is 72423563627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72636532427 - 2⁴ = 72636532411 is a prime.

It is not a weakly prime, because it can be changed into another prime (72636532027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36318266213 + 36318266214.

It is an arithmetic number, because the mean of its divisors is an integer number (36318266214).

Almost surely, 2^72636532427 is an apocalyptic number.

72636532427 is a deficient number, since it is larger than the sum of its proper divisors (1).

72636532427 is an equidigital number, since it uses as much as digits as its factorization.

72636532427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 47.

The spelling of 72636532427 in words is "seventy-two billion, six hundred thirty-six million, five hundred thirty-two thousand, four hundred twenty-seven".