505212045156 has 192 divisors, whose sum is σ = 1620261941760. Its totient is φ = 132565870080.

The previous prime is 505212045127. The next prime is 505212045181. The reversal of 505212045156 is 651540212505.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 505212045156.

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 63 ways as a sum of consecutive naturals, for example, 1805646 + ... + 2066586.

It is an arithmetic number, because the mean of its divisors is an integer number (8438864280).

Almost surely, 2^505212045156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505212045156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810130970880).

505212045156 is an abundant number, since it is smaller than the sum of its proper divisors (1115049896604).

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

505212045156 is a wasteful number, since it uses less digits than its factorization.

505212045156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261171 (or 261163 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 505212045156 in words is "five hundred five billion, two hundred twelve million, forty-five thousand, one hundred fifty-six".