2118644767790 has 16 divisors (see below), whose sum is σ = 3833319966768. Its totient is φ = 843066932736.

The previous prime is 2118644767739. The next prime is 2118644767801. The reversal of 2118644767790 is 977674468112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548869772 + ... + 548873631.

It is an arithmetic number, because the mean of its divisors is an integer number (239582497923).

Almost surely, 2^{2118644767790} is an apocalyptic number.

2118644767790 is a deficient number, since it is larger than the sum of its proper divisors (1714675198978).

2118644767790 is a wasteful number, since it uses less digits than its factorization.

2118644767790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097743603.

The product of its (nonzero) digits is 28449792, while the sum is 62.

The spelling of 2118644767790 in words is "two trillion, one hundred eighteen billion, six hundred forty-four million, seven hundred sixty-seven thousand, seven hundred ninety".