501605333216650 has 96 divisors (see below), whose sum is σ = 1006753869253440. Its totient is φ = 184839685831680.

The previous prime is 501605333216621. The next prime is 501605333216653. The reversal of 501605333216650 is 56612333506105.

It is a super-2 number, since 2×501605333216650² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 501605333216650.

It is not an unprimeable number, because it can be changed into a prime (501605333216653) 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 in 47 ways as a sum of consecutive naturals, for example, 1280654541 + ... + 1281046159.

It is an arithmetic number, because the mean of its divisors is an integer number (10487019471390).

Almost surely, 2^{501605333216650} is an apocalyptic number.

501605333216650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

501605333216650 is an abundant number, since it is smaller than the sum of its proper divisors (505148536036790).

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

501605333216650 is a wasteful number, since it uses less digits than its factorization.

501605333216650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395560 (or 395555 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 46.

The spelling of 501605333216650 in words is "five hundred one trillion, six hundred five billion, three hundred thirty-three million, two hundred sixteen thousand, six hundred fifty".