2516421366 has 24 divisors (see below), whose sum is σ = 5488844400. Its totient is φ = 833176656.

The previous prime is 2516421359. The next prime is 2516421409. The reversal of 2516421366 is 6631246152.

2516421366 is a `hidden beast` number, since 2 + 5 + 1 + 642 + 1 + 3 + 6 + 6 = 666.

It is a super-2 number, since 2×2516421366² = 12664752982522611912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2516421366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 466450 + ... + 471813.

It is an arithmetic number, because the mean of its divisors is an integer number (228701850).

Almost surely, 2^2516421366 is an apocalyptic number.

2516421366 is an abundant number, since it is smaller than the sum of its proper divisors (2972423034).

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

2516421366 is a wasteful number, since it uses less digits than its factorization.

2516421366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938420 (or 938417 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 2516421366 is about 50163.9448807607. The cubic root of 2516421366 is about 1360.1739551853.

The spelling of 2516421366 in words is "two billion, five hundred sixteen million, four hundred twenty-one thousand, three hundred sixty-six".