2251513244356 has 6 divisors (see below), whose sum is σ = 3940148177630. Its totient is φ = 1125756622176.

The previous prime is 2251513244329. The next prime is 2251513244377. The reversal of 2251513244356 is 6534423151522.

It can be written as a sum of positive squares in only one way, i.e., 2159106972100 + 92406272256 = 1469390^2 + 303984^2 .

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 as a sum of consecutive naturals, namely, 281439155541 + ... + 281439155548.

Almost surely, 2^{2251513244356} is an apocalyptic number.

It is an amenable number.

2251513244356 is a deficient number, since it is larger than the sum of its proper divisors (1688634933274).

2251513244356 is a wasteful number, since it uses less digits than its factorization.

2251513244356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562878311093 (or 562878311091 counting only the distinct ones).

The product of its digits is 864000, while the sum is 43.

Adding to 2251513244356 its reverse (6534423151522), we get a palindrome (8785936395878).

The spelling of 2251513244356 in words is "two trillion, two hundred fifty-one billion, five hundred thirteen million, two hundred forty-four thousand, three hundred fifty-six".