2251163012345 has 32 divisors (see below), whose sum is σ = 2937779712000. Its totient is φ = 1646125841664.

The previous prime is 2251163012309. The next prime is 2251163012377. The reversal of 2251163012345 is 5432103611522.

It is a cyclic number.

It is not a de Polignac number, because 2251163012345 - 2²⁶ = 2251095903481 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3135131 + ... + 3785679.

It is an arithmetic number, because the mean of its divisors is an integer number (91805616000).

Almost surely, 2^{2251163012345} is an apocalyptic number.

It is an amenable number.

2251163012345 is a deficient number, since it is larger than the sum of its proper divisors (686616699655).

2251163012345 is a wasteful number, since it uses less digits than its factorization.

2251163012345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651089.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 2251163012345 its reverse (5432103611522), we get a palindrome (7683266623867).

The spelling of 2251163012345 in words is "two trillion, two hundred fifty-one billion, one hundred sixty-three million, twelve thousand, three hundred forty-five".