20890911883 has 8 divisors (see below), whose sum is σ = 21160159200. Its totient is φ = 20622431808.

The previous prime is 20890911857. The next prime is 20890911893. The reversal of 20890911883 is 38811909802.

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

It is a cyclic number.

It is not a de Polignac number, because 20890911883 - 2¹⁷ = 20890780811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20890911803) 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, 136903 + ... + 246016.

It is an arithmetic number, because the mean of its divisors is an integer number (2645019900).

Almost surely, 2^20890911883 is an apocalyptic number.

20890911883 is a deficient number, since it is larger than the sum of its proper divisors (269247317).

20890911883 is an equidigital number, since it uses as much as digits as its factorization.

20890911883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383621.

The product of its (nonzero) digits is 248832, while the sum is 49.

The spelling of 20890911883 in words is "twenty billion, eight hundred ninety million, nine hundred eleven thousand, eight hundred eighty-three".