2164858966994 has 8 divisors (see below), whose sum is σ = 3252261329100. Its totient is φ = 1080771857296.

The previous prime is 2164858966973. The next prime is 2164858967017. The reversal of 2164858966994 is 4996698584612.

It can be written as a sum of positive squares in 2 ways, for example, as 2067398244025 + 97460722969 = 1437845^2 + 312187^2 .

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

It is a super-2 number, since 2×2164858966994² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828811469 + ... + 828814080.

Almost surely, 2^{2164858966994} is an apocalyptic number.

2164858966994 is a deficient number, since it is larger than the sum of its proper divisors (1087402362106).

2164858966994 is a wasteful number, since it uses less digits than its factorization.

2164858966994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657626204.

The product of its digits is 1612431360, while the sum is 77.

The spelling of 2164858966994 in words is "two trillion, one hundred sixty-four billion, eight hundred fifty-eight million, nine hundred sixty-six thousand, nine hundred ninety-four".