2646666422044 has 24 divisors (see below), whose sum is σ = 4819707889920. Its totient is φ = 1270650252144.

The previous prime is 2646666422039. The next prime is 2646666422047. The reversal of 2646666422044 is 4402246666462.

It is a junction number, because it is equal to n+sod(n) for n = 2646666421982 and 2646666422000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646666422047) 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, 130393204 + ... + 130413499.

It is an arithmetic number, because the mean of its divisors is an integer number (200821162080).

Almost surely, 2^{2646666422044} is an apocalyptic number.

It is an amenable number.

2646666422044 is a deficient number, since it is larger than the sum of its proper divisors (2173041467876).

2646666422044 is a wasteful number, since it uses less digits than its factorization.

2646666422044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260806809 (or 260806807 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 52.

The spelling of 2646666422044 in words is "two trillion, six hundred forty-six billion, six hundred sixty-six million, four hundred twenty-two thousand, forty-four".