20489199043 has 16 divisors (see below), whose sum is σ = 23028698880. Its totient is φ = 18135067104.

The previous prime is 20489199037. The next prime is 20489199053. The reversal of 20489199043 is 34099198402.

It is not a de Polignac number, because 20489199043 - 2³³ = 11899264451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20489199013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526396 + ... + 563977.

It is an arithmetic number, because the mean of its divisors is an integer number (1439293680).

Almost surely, 2^20489199043 is an apocalyptic number.

20489199043 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20489199043 is a deficient number, since it is larger than the sum of its proper divisors (2539499837).

20489199043 is a wasteful number, since it uses less digits than its factorization.

20489199043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090458.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 20489199043 in words is "twenty billion, four hundred eighty-nine million, one hundred ninety-nine thousand, forty-three".