501431089697 has 2 divisors, whose sum is σ = 501431089698. Its totient is φ = 501431089696.

The previous prime is 501431089651. The next prime is 501431089771. The reversal of 501431089697 is 796980134105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 330865393681 + 170565696016 = 575209^2 + 412996^2 .

It is a cyclic number.

It is not a de Polignac number, because 501431089697 - 2²⁴ = 501414312481 is a prime.

It is not a weakly prime, because it can be changed into another prime (501431089097) 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, 250715544848 + 250715544849.

It is an arithmetic number, because the mean of its divisors is an integer number (250715544849).

Almost surely, 2^501431089697 is an apocalyptic number.

It is an amenable number.

501431089697 is a deficient number, since it is larger than the sum of its proper divisors (1).

501431089697 is an equidigital number, since it uses as much as digits as its factorization.

501431089697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 501431089697 in words is "five hundred one billion, four hundred thirty-one million, eighty-nine thousand, six hundred ninety-seven".