2516866422 has 64 divisors (see below), whose sum is σ = 6159836160. Its totient is φ = 669182976.

The previous prime is 2516866421. The next prime is 2516866441. The reversal of 2516866422 is 2246686152.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2516866421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43743 + ... + 83349.

It is an arithmetic number, because the mean of its divisors is an integer number (96247440).

Almost surely, 2^2516866422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2516866422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3079918080).

2516866422 is an abundant number, since it is smaller than the sum of its proper divisors (3642969738).

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

2516866422 is a wasteful number, since it uses less digits than its factorization.

2516866422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39725.

The product of its digits is 276480, while the sum is 42.

The square root of 2516866422 is about 50168.3806994007. The cubic root of 2516866422 is about 1360.2541375564.

The spelling of 2516866422 in words is "two billion, five hundred sixteen million, eight hundred sixty-six thousand, four hundred twenty-two".