501666348013 has 2 divisors, whose sum is σ = 501666348014. Its totient is φ = 501666348012.

The previous prime is 501666347999. The next prime is 501666348049. The reversal of 501666348013 is 310843666105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 473759643204 + 27906704809 = 688302^2 + 167053^2 .

It is a cyclic number.

It is not a de Polignac number, because 501666348013 - 2²⁵ = 501632793581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501666342013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250833174006 + 250833174007.

It is an arithmetic number, because the mean of its divisors is an integer number (250833174007).

Almost surely, 2^501666348013 is an apocalyptic number.

It is an amenable number.

501666348013 is a deficient number, since it is larger than the sum of its proper divisors (1).

501666348013 is an equidigital number, since it uses as much as digits as its factorization.

501666348013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 501666348013 in words is "five hundred one billion, six hundred sixty-six million, three hundred forty-eight thousand, thirteen".