2005023123100 has 18 divisors (see below), whose sum is σ = 4350900177344. Its totient is φ = 802009249200.

The previous prime is 2005023123097. The next prime is 2005023123113. The reversal of 2005023123100 is 13213205002.

It is a super-2 number, since 2×2005023123100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10025115516 + ... + 10025115715.

Almost surely, 2^{2005023123100} is an apocalyptic number.

2005023123100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2005023123100 is an abundant number, since it is smaller than the sum of its proper divisors (2345877054244).

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

2005023123100 is a wasteful number, since it uses less digits than its factorization.

2005023123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20050231245 (or 20050231238 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 2005023123100 its reverse (13213205002), we get a palindrome (2018236328102).

The spelling of 2005023123100 in words is "two trillion, five billion, twenty-three million, one hundred twenty-three thousand, one hundred".