20881354190 has 16 divisors (see below), whose sum is σ = 37796420880. Its totient is φ = 8305878720.

The previous prime is 20881354177. The next prime is 20881354199. The reversal of 20881354190 is 9145318802.

It is a super-2 number, since 2×20881354190² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20881354199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5830991 + ... + 5834570.

It is an arithmetic number, because the mean of its divisors is an integer number (2362276305).

Almost surely, 2^20881354190 is an apocalyptic number.

20881354190 is a deficient number, since it is larger than the sum of its proper divisors (16915066690).

20881354190 is a wasteful number, since it uses less digits than its factorization.

20881354190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11665747.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 20881354190 in words is "twenty billion, eight hundred eighty-one million, three hundred fifty-four thousand, one hundred ninety".