2164640343754 has 24 divisors (see below), whose sum is σ = 3777680667168. Its totient is φ = 927554617080.

The previous prime is 2164640343743. The next prime is 2164640343757. The reversal of 2164640343754 is 4573430464612.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 2164640343698 and 2164640343707.

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 11 ways as a sum of consecutive naturals, for example, 1149612 + ... + 2377159.

It is an arithmetic number, because the mean of its divisors is an integer number (157403361132).

Almost surely, 2^{2164640343754} is an apocalyptic number.

2164640343754 is a deficient number, since it is larger than the sum of its proper divisors (1613040323414).

2164640343754 is a wasteful number, since it uses less digits than its factorization.

2164640343754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533050 (or 3533043 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 49.

The spelling of 2164640343754 in words is "two trillion, one hundred sixty-four billion, six hundred forty million, three hundred forty-three thousand, seven hundred fifty-four".