20489065994 has 8 divisors (see below), whose sum is σ = 30734544960. Its totient is φ = 10244217676.

The previous prime is 20489065991. The next prime is 20489065999. The reversal of 20489065994 is 49956098402.

It is a happy number.

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

It is a super-3 number, since 3×20489065994³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20489065991) 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, 65714 + ... + 212829.

It is an arithmetic number, because the mean of its divisors is an integer number (3841818120).

Almost surely, 2^20489065994 is an apocalyptic number.

20489065994 is a deficient number, since it is larger than the sum of its proper divisors (10245478966).

20489065994 is a wasteful number, since it uses less digits than its factorization.

20489065994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315324.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 20489065994 in words is "twenty billion, four hundred eighty-nine million, sixty-five thousand, nine hundred ninety-four".