20667674398 has 16 divisors (see below), whose sum is σ = 35635102560. Its totient is φ = 8806373856.

The previous prime is 20667674393. The next prime is 20667674437. The reversal of 20667674398 is 89347676602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20667674393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4264233 + ... + 4269076.

It is an arithmetic number, because the mean of its divisors is an integer number (2227193910).

Almost surely, 2^20667674398 is an apocalyptic number.

20667674398 is a deficient number, since it is larger than the sum of its proper divisors (14967428162).

20667674398 is a wasteful number, since it uses less digits than its factorization.

20667674398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8533491.

The product of its (nonzero) digits is 18289152, while the sum is 58.

The spelling of 20667674398 in words is "twenty billion, six hundred sixty-seven million, six hundred seventy-four thousand, three hundred ninety-eight".