2661353266604 has 12 divisors (see below), whose sum is σ = 4713481087224. Its totient is φ = 1314644384544.

The previous prime is 2661353266573. The next prime is 2661353266633. The reversal of 2661353266604 is 4066623531662.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4008061817 + ... + 4008062480.

It is an arithmetic number, because the mean of its divisors is an integer number (392790090602).

Almost surely, 2^{2661353266604} is an apocalyptic number.

It is an amenable number.

2661353266604 is a deficient number, since it is larger than the sum of its proper divisors (2052127820620).

2661353266604 is a wasteful number, since it uses less digits than its factorization.

2661353266604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8016124384 (or 8016124382 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 50.

The spelling of 2661353266604 in words is "two trillion, six hundred sixty-one billion, three hundred fifty-three million, two hundred sixty-six thousand, six hundred four".