2661133975 has 12 divisors (see below), whose sum is σ = 3362068296. Its totient is φ = 2088738080.

The previous prime is 2661133973. The next prime is 2661134027. The reversal of 2661133975 is 5793311662.

It is not a de Polignac number, because 2661133975 - 2¹ = 2661133973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661133973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1002877 + ... + 1005526.

It is an arithmetic number, because the mean of its divisors is an integer number (280172358).

Almost surely, 2^2661133975 is an apocalyptic number.

2661133975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2661133975 is a deficient number, since it is larger than the sum of its proper divisors (700934321).

2661133975 is a wasteful number, since it uses less digits than its factorization.

2661133975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008466 (or 2008461 counting only the distinct ones).

The product of its digits is 204120, while the sum is 43.

The square root of 2661133975 is about 51586.1800776138. The cubic root of 2661133975 is about 1385.7628461415.

The spelling of 2661133975 in words is "two billion, six hundred sixty-one million, one hundred thirty-three thousand, nine hundred seventy-five".