2251050420166 has 32 divisors (see below), whose sum is σ = 3604610211840. Its totient is φ = 1050608877696.

The previous prime is 2251050420139. The next prime is 2251050420167. The reversal of 2251050420166 is 6610240501522.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251050420167) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12445365 + ... + 12624943.

It is an arithmetic number, because the mean of its divisors is an integer number (112644069120).

Almost surely, 2^{2251050420166} is an apocalyptic number.

2251050420166 is a deficient number, since it is larger than the sum of its proper divisors (1353559791674).

2251050420166 is a wasteful number, since it uses less digits than its factorization.

2251050420166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182628.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 2251050420166 its reverse (6610240501522), we get a palindrome (8861290921688).

The spelling of 2251050420166 in words is "two trillion, two hundred fifty-one billion, fifty million, four hundred twenty thousand, one hundred sixty-six".