20054204500 has 48 divisors (see below), whose sum is σ = 47780066880. Its totient is φ = 7292436000.

The previous prime is 20054204491. The next prime is 20054204509. The reversal of 20054204500 is 540245002.

It is an interprime number because it is at equal distance from previous prime (20054204491) and next prime (20054204509).

It is a super-2 number, since 2×20054204500² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20054204509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1817610 + ... + 1828609.

It is an arithmetic number, because the mean of its divisors is an integer number (995418060).

Almost surely, 2^20054204500 is an apocalyptic number.

20054204500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20054204500 is an abundant number, since it is smaller than the sum of its proper divisors (27725862380).

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

20054204500 is a wasteful number, since it uses less digits than its factorization.

20054204500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3646249 (or 3646237 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

Adding to 20054204500 its reverse (540245002), we get a palindrome (20594449502).

The spelling of 20054204500 in words is "twenty billion, fifty-four million, two hundred four thousand, five hundred".