20611049668 has 12 divisors (see below), whose sum is σ = 39348367632. Its totient is φ = 9368658920.

The previous prime is 20611049629. The next prime is 20611049671. The reversal of 20611049668 is 86694011602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234216430 + ... + 234216517.

It is an arithmetic number, because the mean of its divisors is an integer number (3279030636).

Almost surely, 2^20611049668 is an apocalyptic number.

It is an amenable number.

20611049668 is a deficient number, since it is larger than the sum of its proper divisors (18737317964).

20611049668 is a wasteful number, since it uses less digits than its factorization.

20611049668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468432962 (or 468432960 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 20611049668 in words is "twenty billion, six hundred eleven million, forty-nine thousand, six hundred sixty-eight".