501406138027 has 2 divisors, whose sum is σ = 501406138028. Its totient is φ = 501406138026.

The previous prime is 501406138007. The next prime is 501406138039. The reversal of 501406138027 is 720831604105.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 501406138027 - 2³¹ = 499258654379 is a prime.

It is not a weakly prime, because it can be changed into another prime (501406138007) 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, 250703069013 + 250703069014.

It is an arithmetic number, because the mean of its divisors is an integer number (250703069014).

Almost surely, 2^501406138027 is an apocalyptic number.

501406138027 is a deficient number, since it is larger than the sum of its proper divisors (1).

501406138027 is an equidigital number, since it uses as much as digits as its factorization.

501406138027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 501406138027 in words is "five hundred one billion, four hundred six million, one hundred thirty-eight thousand, twenty-seven".