2145005173100 has 36 divisors (see below), whose sum is σ = 4666814471424. Its totient is φ = 855761839680.

The previous prime is 2145005173049. The next prime is 2145005173111. The reversal of 2145005173100 is 13715005412.

It is a super-2 number, since 2×2145005173100² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27964379 + ... + 28040978.

Almost surely, 2^{2145005173100} is an apocalyptic number.

2145005173100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145005173100 is an abundant number, since it is smaller than the sum of its proper divisors (2521809298324).

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

2145005173100 is a wasteful number, since it uses less digits than its factorization.

2145005173100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56005754 (or 56005747 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The spelling of 2145005173100 in words is "two trillion, one hundred forty-five billion, five million, one hundred seventy-three thousand, one hundred".