20374040668 has 12 divisors (see below), whose sum is σ = 35926744392. Its totient is φ = 10109256560.

The previous prime is 20374040663. The next prime is 20374040699. The reversal of 20374040668 is 86604047302.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20374040668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20374040663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19440355 + ... + 19441402.

It is an arithmetic number, because the mean of its divisors is an integer number (2993895366).

Almost surely, 2^20374040668 is an apocalyptic number.

It is an amenable number.

20374040668 is a deficient number, since it is larger than the sum of its proper divisors (15552703724).

20374040668 is a wasteful number, since it uses less digits than its factorization.

20374040668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38881892 (or 38881890 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 20374040668 in words is "twenty billion, three hundred seventy-four million, forty thousand, six hundred sixty-eight".