2251513244444 has 12 divisors (see below), whose sum is σ = 4147524397800. Its totient is φ = 1066506273648.

The previous prime is 2251513244419. The next prime is 2251513244467. The reversal of 2251513244444 is 4444423151522.

It is a congruent number.

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, 14812587059 + ... + 14812587210.

It is an arithmetic number, because the mean of its divisors is an integer number (345627033150).

Almost surely, 2^{2251513244444} is an apocalyptic number.

It is an amenable number.

2251513244444 is a deficient number, since it is larger than the sum of its proper divisors (1896011153356).

2251513244444 is a wasteful number, since it uses less digits than its factorization.

2251513244444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29625174292 (or 29625174290 counting only the distinct ones).

The product of its digits is 614400, while the sum is 41.

Adding to 2251513244444 its reverse (4444423151522), we get a palindrome (6695936395966).

The spelling of 2251513244444 in words is "two trillion, two hundred fifty-one billion, five hundred thirteen million, two hundred forty-four thousand, four hundred forty-four".