2164155764744 has 16 divisors (see below), whose sum is σ = 4057831006800. Its totient is φ = 1082067496272.

The previous prime is 2164155764717. The next prime is 2164155764747. The reversal of 2164155764744 is 4474675514612.

It is a self number, because there is not a number n which added to its sum of digits gives 2164155764744.

It is not an unprimeable number, because it can be changed into a prime (2164155764747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373982 + ... + 2113805.

It is an arithmetic number, because the mean of its divisors is an integer number (253614437925).

Almost surely, 2^{2164155764744} is an apocalyptic number.

It is an amenable number.

2164155764744 is a deficient number, since it is larger than the sum of its proper divisors (1893675242056).

2164155764744 is a wasteful number, since it uses less digits than its factorization.

2164155764744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596532 (or 2596528 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 56.

The spelling of 2164155764744 in words is "two trillion, one hundred sixty-four billion, one hundred fifty-five million, seven hundred sixty-four thousand, seven hundred forty-four".