20055450123 has 8 divisors (see below), whose sum is σ = 29711778000. Its totient is φ = 13370300064.

The previous prime is 20055450083. The next prime is 20055450167. The reversal of 20055450123 is 32105455002.

It is a happy number.

20055450123 is a `hidden beast` number, since 200 + 5 + 5 + 450 + 1 + 2 + 3 = 666.

It is not a de Polignac number, because 20055450123 - 2⁶ = 20055450059 is a prime.

It is a super-2 number, since 2×20055450123² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 742794449 = 20055450123 / (2 + 0 + 0 + 5 + 5 + 4 + 5 + 0 + 1 + 2 + 3).

It is not an unprimeable number, because it can be changed into a prime (20055450823) 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, 371397198 + ... + 371397251.

It is an arithmetic number, because the mean of its divisors is an integer number (3713972250).

Almost surely, 2^20055450123 is an apocalyptic number.

20055450123 is a deficient number, since it is larger than the sum of its proper divisors (9656327877).

20055450123 is an equidigital number, since it uses as much as digits as its factorization.

20055450123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742794458 (or 742794452 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 20055450123 in words is "twenty billion, fifty-five million, four hundred fifty thousand, one hundred twenty-three".