2164739554611 has 12 divisors (see below), whose sum is σ = 3291416866920. Its totient is φ = 1367203929120.

The previous prime is 2164739554543. The next prime is 2164739554669. The reversal of 2164739554611 is 1164559374612.

2164739554611 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 7 + 3 + 95 + 546 + 1 + 1 = 666.

It is not a de Polignac number, because 2164739554611 - 2²¹ = 2164737457459 is a prime.

It is a super-4 number, since 4×2164739554611⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2164739554511) 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, 6329647650 + ... + 6329647991.

It is an arithmetic number, because the mean of its divisors is an integer number (274284738910).

Almost surely, 2^{2164739554611} is an apocalyptic number.

2164739554611 is a deficient number, since it is larger than the sum of its proper divisors (1126677312309).

2164739554611 is a wasteful number, since it uses less digits than its factorization.

2164739554611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12659295666 (or 12659295663 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 2164739554611 in words is "two trillion, one hundred sixty-four billion, seven hundred thirty-nine million, five hundred fifty-four thousand, six hundred eleven".