2164626164444 has 6 divisors (see below), whose sum is σ = 3788095787784. Its totient is φ = 1082313082220.

The previous prime is 2164626164431. The next prime is 2164626164461. The reversal of 2164626164444 is 4444616264612.

It is a junction number, because it is equal to n+sod(n) for n = 2164626164392 and 2164626164401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270578270552 + ... + 270578270559.

It is an arithmetic number, because the mean of its divisors is an integer number (631349297964).

Almost surely, 2^{2164626164444} is an apocalyptic number.

It is an amenable number.

2164626164444 is a deficient number, since it is larger than the sum of its proper divisors (1623469623340).

2164626164444 is a wasteful number, since it uses less digits than its factorization.

2164626164444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541156541115 (or 541156541113 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 50.

The spelling of 2164626164444 in words is "two trillion, one hundred sixty-four billion, six hundred twenty-six million, one hundred sixty-four thousand, four hundred forty-four".