512549781212 has 48 divisors (see below), whose sum is σ = 1034765706240. Its totient is φ = 217600992000.

The previous prime is 512549781173. The next prime is 512549781229. The reversal of 512549781212 is 212187945215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1349012 + ... + 1686692.

It is an arithmetic number, because the mean of its divisors is an integer number (21557618880).

Almost surely, 2^512549781212 is an apocalyptic number.

It is an amenable number.

512549781212 is an abundant number, since it is smaller than the sum of its proper divisors (522215925028).

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

512549781212 is a wasteful number, since it uses less digits than its factorization.

512549781212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338202 (or 338200 counting only the distinct ones).

The product of its digits is 403200, while the sum is 47.

The spelling of 512549781212 in words is "five hundred twelve billion, five hundred forty-nine million, seven hundred eighty-one thousand, two hundred twelve".