2166166010461 has 8 divisors (see below), whose sum is σ = 2169334959480. Its totient is φ = 2162997645312.

The previous prime is 2166166010417. The next prime is 2166166010473. The reversal of 2166166010461 is 1640106616612.

It can be written as a sum of positive squares in 4 ways, for example, as 985751122500 + 1180414887961 = 992850^2 + 1086469^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2166166010461 is a prime.

It is a super-2 number, since 2×2166166010461² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166169010461) 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 7 ways as a sum of consecutive naturals, for example, 7577421 + ... + 7858093.

It is an arithmetic number, because the mean of its divisors is an integer number (271166869935).

Almost surely, 2^{2166166010461} is an apocalyptic number.

It is an amenable number.

2166166010461 is a deficient number, since it is larger than the sum of its proper divisors (3168949019).

2166166010461 is a wasteful number, since it uses less digits than its factorization.

2166166010461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291935.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 2166166010461 in words is "two trillion, one hundred sixty-six billion, one hundred sixty-six million, ten thousand, four hundred sixty-one".