20043220554 has 64 divisors (see below), whose sum is σ = 50918400000. Its totient is φ = 5724949104.

The previous prime is 20043220523. The next prime is 20043220601. The reversal of 20043220554 is 45502234002.

It is a happy number.

20043220554 is a `hidden beast` number, since 20 + 0 + 432 + 205 + 5 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1884319 + ... + 1894925.

It is an arithmetic number, because the mean of its divisors is an integer number (795600000).

Almost surely, 2^20043220554 is an apocalyptic number.

20043220554 is an abundant number, since it is smaller than the sum of its proper divisors (30875179446).

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

20043220554 is a wasteful number, since it uses less digits than its factorization.

20043220554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15624 (or 15618 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 20043220554 its reverse (45502234002), we get a palindrome (65545454556).

The spelling of 20043220554 in words is "twenty billion, forty-three million, two hundred twenty thousand, five hundred fifty-four".