2516021010 has 48 divisors (see below), whose sum is σ = 6545102616. Its totient is φ = 670585344.

The previous prime is 2516021009. The next prime is 2516021023. The reversal of 2516021010 is 101206152.

2516021010 is a `hidden beast` number, since 2 + 51 + 602 + 1 + 0 + 10 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2312359569 + 203661441 = 48087^2 + 14271^2 .

It is a super-2 number, since 2×2516021010² = 12660723445522840200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 195082 + ... + 207578.

Almost surely, 2^2516021010 is an apocalyptic number.

2516021010 is an abundant number, since it is smaller than the sum of its proper divisors (4029081606).

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

2516021010 is a wasteful number, since it uses less digits than its factorization.

2516021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14747 (or 14744 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 2516021010 is about 50159.9542463906. The cubic root of 2516021010 is about 1360.1018179970.

Adding to 2516021010 its reverse (101206152), we get a palindrome (2617227162).

The spelling of 2516021010 in words is "two billion, five hundred sixteen million, twenty-one thousand, ten".