2661126875 has 40 divisors (see below), whose sum is σ = 3841207920. Its totient is φ = 1821440000.

The previous prime is 2661126869. The next prime is 2661126883. The reversal of 2661126875 is 5786211662.

It is not a de Polignac number, because 2661126875 - 2¹⁰ = 2661125851 is a prime.

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 39 ways as a sum of consecutive naturals, for example, 105491 + ... + 128259.

It is an arithmetic number, because the mean of its divisors is an integer number (96030198).

Almost surely, 2^2661126875 is an apocalyptic number.

2661126875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2661126875 is a deficient number, since it is larger than the sum of its proper divisors (1180081045).

2661126875 is a wasteful number, since it uses less digits than its factorization.

2661126875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22817 (or 22802 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 2661126875 is about 51586.1112606872. Note that the first 3 decimals coincide. The cubic root of 2661126875 is about 1385.7616137189.

The spelling of 2661126875 in words is "two billion, six hundred sixty-one million, one hundred twenty-six thousand, eight hundred seventy-five".