252320670440 has 16 divisors (see below), whose sum is σ = 567721508580. Its totient is φ = 100928268160.

The previous prime is 252320670439. The next prime is 252320670461. The reversal of 252320670440 is 44076023252.

It can be written as a sum of positive squares in 2 ways, for example, as 252279171076 + 41499364 = 502274^2 + 6442^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 252320670440.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3154008341 + ... + 3154008420.

Almost surely, 2^252320670440 is an apocalyptic number.

252320670440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252320670440 is an abundant number, since it is smaller than the sum of its proper divisors (315400838140).

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

252320670440 is a wasteful number, since it uses less digits than its factorization.

252320670440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6308016772 (or 6308016768 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

Adding to 252320670440 its reverse (44076023252), we get a palindrome (296396693692).

The spelling of 252320670440 in words is "two hundred fifty-two billion, three hundred twenty million, six hundred seventy thousand, four hundred forty".