501605342742340 has 12 divisors (see below), whose sum is σ = 1053371219758956. Its totient is φ = 200642137096928.

The previous prime is 501605342742311. The next prime is 501605342742349. The reversal of 501605342742340 is 43247243506105.

It can be written as a sum of positive squares in 2 ways, for example, as 127324007034436 + 374281335707904 = 11283794^2 + 19346352^2 .

It is not an unprimeable number, because it can be changed into a prime (501605342742349) 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 in 3 ways as a sum of consecutive naturals, for example, 12540133568539 + ... + 12540133568578.

It is an arithmetic number, because the mean of its divisors is an integer number (87780934979913).

Almost surely, 2^{501605342742340} is an apocalyptic number.

It is an amenable number.

501605342742340 is an abundant number, since it is smaller than the sum of its proper divisors (551765877016616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501605342742340 is a wasteful number, since it uses less digits than its factorization.

501605342742340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25080267137126 (or 25080267137124 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 46.

The spelling of 501605342742340 in words is "five hundred one trillion, six hundred five billion, three hundred forty-two million, seven hundred forty-two thousand, three hundred forty".