2661165626133 has 32 divisors (see below), whose sum is σ = 4091618119680. Its totient is φ = 1507014648000.

The previous prime is 2661165626129. The next prime is 2661165626159. The reversal of 2661165626133 is 3316265611662.

It is not a de Polignac number, because 2661165626133 - 2² = 2661165626129 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661165626633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 807508 + ... + 2444258.

It is an arithmetic number, because the mean of its divisors is an integer number (127863066240).

Almost surely, 2^{2661165626133} is an apocalyptic number.

It is an amenable number.

2661165626133 is a deficient number, since it is larger than the sum of its proper divisors (1430452493547).

2661165626133 is a wasteful number, since it uses less digits than its factorization.

2661165626133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637457.

The product of its digits is 1399680, while the sum is 48.

The spelling of 2661165626133 in words is "two trillion, six hundred sixty-one billion, one hundred sixty-five million, six hundred twenty-six thousand, one hundred thirty-three".