2661636124 has 48 divisors (see below), whose sum is σ = 5531904000. Its totient is φ = 1096353216.

The previous prime is 2661636083. The next prime is 2661636191. The reversal of 2661636124 is 4216361662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173727 + ... + 188425.

It is an arithmetic number, because the mean of its divisors is an integer number (115248000).

Almost surely, 2^2661636124 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 2661636124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2765952000).

2661636124 is an abundant number, since it is smaller than the sum of its proper divisors (2870267876).

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

2661636124 is a wasteful number, since it uses less digits than its factorization.

2661636124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14962 (or 14960 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 2661636124 is about 51591.0469364598. The cubic root of 2661636124 is about 1385.8500039308.

Adding to 2661636124 its reverse (4216361662), we get a palindrome (6877997786).

The spelling of 2661636124 in words is "two billion, six hundred sixty-one million, six hundred thirty-six thousand, one hundred twenty-four".