2251099420416 has 2304 divisors, whose sum is σ = 9283121971200. Its totient is φ = 520457011200.

The previous prime is 2251099420387. The next prime is 2251099420429. The reversal of 2251099420416 is 6140249901522.

2251099420416 is a `hidden beast` number, since 2 + 2 + 510 + 9 + 94 + 2 + 0 + 41 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (2304).

It is a super-2 number, since 2×2251099420416² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 13479637165 + ... + 13479637331.

It is an arithmetic number, because the mean of its divisors is an integer number (4029132800).

Almost surely, 2^{2251099420416} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2251099420416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4641560985600).

2251099420416 is an abundant number, since it is smaller than the sum of its proper divisors (7032022550784).

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

2251099420416 is a wasteful number, since it uses less digits than its factorization.

2251099420416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 2251099420416 in words is "two trillion, two hundred fifty-one billion, ninety-nine million, four hundred twenty thousand, four hundred sixteen".