20423210986 has 8 divisors (see below), whose sum is σ = 30643127424. Its totient is φ = 10208835180.

The previous prime is 20423210981. The next prime is 20423211019. The reversal of 20423210986 is 68901232402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20423210981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375930 + ... + 1390693.

It is an arithmetic number, because the mean of its divisors is an integer number (3830390928).

Almost surely, 2^20423210986 is an apocalyptic number.

20423210986 is a deficient number, since it is larger than the sum of its proper divisors (10219916438).

20423210986 is a wasteful number, since it uses less digits than its factorization.

20423210986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770316.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 20423210986 in words is "twenty billion, four hundred twenty-three million, two hundred ten thousand, nine hundred eighty-six".