52181212490 has 48 divisors (see below), whose sum is σ = 104655615624. Its totient is φ = 18715023360.

The previous prime is 52181212453. The next prime is 52181212543. The reversal of 52181212490 is 9421218125.

It can be written as a sum of positive squares in 4 ways, for example, as 35784153889 + 16397058601 = 189167^2 + 128051^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52181212490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207047 + ... + 383706.

Almost surely, 2^52181212490 is an apocalyptic number.

52181212490 is an abundant number, since it is smaller than the sum of its proper divisors (52474403134).

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

52181212490 is a wasteful number, since it uses less digits than its factorization.

52181212490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590855 (or 590844 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 52181212490 in words is "fifty-two billion, one hundred eighty-one million, two hundred twelve thousand, four hundred ninety".