20550234190 has 16 divisors (see below), whose sum is σ = 37149182928. Its totient is φ = 8184813376.

The previous prime is 20550234181. The next prime is 20550234191. The reversal of 20550234190 is 9143205502.

It is a super-2 number, since 2×20550234190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20550234191) 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, 4407592 + ... + 4412251.

It is an arithmetic number, because the mean of its divisors is an integer number (2321823933).

Almost surely, 2^20550234190 is an apocalyptic number.

20550234190 is a deficient number, since it is larger than the sum of its proper divisors (16598948738).

20550234190 is a wasteful number, since it uses less digits than its factorization.

20550234190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8820083.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 20550234190 its reverse (9143205502), we get a palindrome (29693439692).

The spelling of 20550234190 in words is "twenty billion, five hundred fifty million, two hundred thirty-four thousand, one hundred ninety".