2164656281058 has 20 divisors (see below), whose sum is σ = 4850433519030. Its totient is φ = 721552093632.

The previous prime is 2164656281057. The next prime is 2164656281071. The reversal of 2164656281058 is 8501826564612.

2164656281058 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 6 + 5 + 628 + 1 + 0 + 5 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2136984956649 + 27671324409 = 1461843^2 + 166347^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 2164656280995 and 2164656281013.

It is not an unprimeable number, because it can be changed into a prime (2164656281057) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6681037743 + ... + 6681038066.

Almost surely, 2^{2164656281058} is an apocalyptic number.

2164656281058 is an abundant number, since it is smaller than the sum of its proper divisors (2685777237972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2164656281058 is a wasteful number, since it uses less digits than its factorization.

2164656281058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13362075823 (or 13362075814 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 2164656281058 in words is "two trillion, one hundred sixty-four billion, six hundred fifty-six million, two hundred eighty-one thousand, fifty-eight".