20750001668 has 12 divisors (see below), whose sum is σ = 39613639632. Its totient is φ = 9431818920.

The previous prime is 20750001647. The next prime is 20750001677. The reversal of 20750001668 is 86610005702.

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, 235795430 + ... + 235795517.

It is an arithmetic number, because the mean of its divisors is an integer number (3301136636).

Almost surely, 2^20750001668 is an apocalyptic number.

It is an amenable number.

20750001668 is a deficient number, since it is larger than the sum of its proper divisors (18863637964).

20750001668 is a wasteful number, since it uses less digits than its factorization.

20750001668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471590962 (or 471590960 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 20750001668 in words is "twenty billion, seven hundred fifty million, one thousand, six hundred sixty-eight".