2166364401311 has 4 divisors (see below), whose sum is σ = 2363306619624. Its totient is φ = 1969422183000.

The previous prime is 2166364401259. The next prime is 2166364401329. The reversal of 2166364401311 is 1131044636612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2166364401311 - 2¹⁰ = 2166364400287 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 (2166364601311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98471109140 + ... + 98471109161.

It is an arithmetic number, because the mean of its divisors is an integer number (590826654906).

Almost surely, 2^{2166364401311} is an apocalyptic number.

2166364401311 is a deficient number, since it is larger than the sum of its proper divisors (196942218313).

2166364401311 is a wasteful number, since it uses less digits than its factorization.

2166364401311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196942218312.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 2166364401311 in words is "two trillion, one hundred sixty-six billion, three hundred sixty-four million, four hundred one thousand, three hundred eleven".