252461331644 has 12 divisors (see below), whose sum is σ = 456059179968. Its totient is φ = 122158708800.

The previous prime is 252461331643. The next prime is 252461331649. The reversal of 252461331644 is 446133164252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252461331641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017989117 + ... + 1017989364.

It is an arithmetic number, because the mean of its divisors is an integer number (38004931664).

Almost surely, 2^252461331644 is an apocalyptic number.

It is an amenable number.

252461331644 is a deficient number, since it is larger than the sum of its proper divisors (203597848324).

252461331644 is a wasteful number, since it uses less digits than its factorization.

252461331644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035978516 (or 2035978514 counting only the distinct ones).

The product of its digits is 414720, while the sum is 41.

Adding to 252461331644 its reverse (446133164252), we get a palindrome (698594495896).

The spelling of 252461331644 in words is "two hundred fifty-two billion, four hundred sixty-one million, three hundred thirty-one thousand, six hundred forty-four".