12189651871900 has 18 divisors (see below), whose sum is σ = 26451544562240. Its totient is φ = 4875860748720.

The previous prime is 12189651871897. The next prime is 12189651871939. The reversal of 12189651871900 is 917815698121.

It is a super-2 number, since 2×12189651871900² (a number of 27 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, 60948259260 + ... + 60948259459.

Almost surely, 2^{12189651871900} is an apocalyptic number.

12189651871900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12189651871900 is an abundant number, since it is smaller than the sum of its proper divisors (14261892690340).

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

12189651871900 is a wasteful number, since it uses less digits than its factorization.

12189651871900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121896518733 (or 121896518726 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 58.

The spelling of 12189651871900 in words is "twelve trillion, one hundred eighty-nine billion, six hundred fifty-one million, eight hundred seventy-one thousand, nine hundred".