2251205243544 has 16 divisors (see below), whose sum is σ = 5628013108920. Its totient is φ = 750401747840.

The previous prime is 2251205243533. The next prime is 2251205243593. The reversal of 2251205243544 is 4453425021522.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 46900109217 + ... + 46900109264.

Almost surely, 2^{2251205243544} is an apocalyptic number.

2251205243544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2251205243544 is an abundant number, since it is smaller than the sum of its proper divisors (3376807865376).

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

2251205243544 is a wasteful number, since it uses less digits than its factorization.

2251205243544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93800218490 (or 93800218486 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 39.

The spelling of 2251205243544 in words is "two trillion, two hundred fifty-one billion, two hundred five million, two hundred forty-three thousand, five hundred forty-four".