20143400220 has 48 divisors (see below), whose sum is σ = 62668357920. Its totient is φ = 5371573248.

The previous prime is 20143400213. The next prime is 20143400243. The reversal of 20143400220 is 2200434102.

20143400220 is a `hidden beast` number, since 2 + 0 + 1 + 43 + 400 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20143400193 and 20143400202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18650757 + ... + 18651836.

It is an arithmetic number, because the mean of its divisors is an integer number (1305590790).

Almost surely, 2^20143400220 is an apocalyptic number.

20143400220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20143400220 is an abundant number, since it is smaller than the sum of its proper divisors (42524957700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20143400220 is a wasteful number, since it uses less digits than its factorization.

20143400220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37302611 (or 37302603 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20143400220 its reverse (2200434102), we get a palindrome (22343834322).

The spelling of 20143400220 in words is "twenty billion, one hundred forty-three million, four hundred thousand, two hundred twenty".