20090832881 has 4 divisors (see below), whose sum is σ = 22960951872. Its totient is φ = 17220713892.

The previous prime is 20090832857. The next prime is 20090832893. The reversal of 20090832881 is 18823809002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18823809002 = 2 ⋅9411904501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20090832881 is a prime.

It is a super-2 number, since 2×20090832881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20090832821) 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, 1435059485 + ... + 1435059498.

It is an arithmetic number, because the mean of its divisors is an integer number (5740237968).

Almost surely, 2^20090832881 is an apocalyptic number.

It is an amenable number.

20090832881 is a deficient number, since it is larger than the sum of its proper divisors (2870118991).

20090832881 is an equidigital number, since it uses as much as digits as its factorization.

20090832881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870118990.

The product of its (nonzero) digits is 55296, while the sum is 41.

The spelling of 20090832881 in words is "twenty billion, ninety million, eight hundred thirty-two thousand, eight hundred eighty-one".