503426652066 has 64 divisors (see below), whose sum is σ = 1205929818240. Its totient is φ = 154752897600.

The previous prime is 503426652059. The next prime is 503426652089. The reversal of 503426652066 is 660256624305.

503426652066 is a `hidden beast` number, since 5 + 0 + 3 + 4 + 2 + 66 + 520 + 66 = 666.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 396636 + ... + 1078968.

It is an arithmetic number, because the mean of its divisors is an integer number (18842653410).

Almost surely, 2^503426652066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 503426652066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602964909120).

503426652066 is an abundant number, since it is smaller than the sum of its proper divisors (702503166174).

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

503426652066 is a wasteful number, since it uses less digits than its factorization.

503426652066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683408 (or 683402 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 503426652066 in words is "five hundred three billion, four hundred twenty-six million, six hundred fifty-two thousand, sixty-six".