2164640343752 has 32 divisors (see below), whose sum is σ = 4079499120000. Its totient is φ = 1076782394688.

The previous prime is 2164640343743. The next prime is 2164640343757. The reversal of 2164640343752 is 2573430464612.

It is a junction number, because it is equal to n+sod(n) for n = 2164640343697 and 2164640343706.

It is not an unprimeable number, because it can be changed into a prime (2164640343757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1514399 + ... + 2573457.

It is an arithmetic number, because the mean of its divisors is an integer number (127484347500).

Almost surely, 2^{2164640343752} is an apocalyptic number.

It is an amenable number.

2164640343752 is a deficient number, since it is larger than the sum of its proper divisors (1914858776248).

2164640343752 is a wasteful number, since it uses less digits than its factorization.

2164640343752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060373 (or 1060369 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 47.

The spelling of 2164640343752 in words is "two trillion, one hundred sixty-four billion, six hundred forty million, three hundred forty-three thousand, seven hundred fifty-two".