12185573870 has 8 divisors (see below), whose sum is σ = 21934032984. Its totient is φ = 4874229544.

The previous prime is 12185573849. The next prime is 12185573923. The reversal of 12185573870 is 7837558121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609278684 + ... + 609278703.

It is an arithmetic number, because the mean of its divisors is an integer number (2741754123).

Almost surely, 2^12185573870 is an apocalyptic number.

12185573870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12185573870 is a deficient number, since it is larger than the sum of its proper divisors (9748459114).

12185573870 is a wasteful number, since it uses less digits than its factorization.

12185573870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218557394.

The product of its (nonzero) digits is 470400, while the sum is 47.

The spelling of 12185573870 in words is "twelve billion, one hundred eighty-five million, five hundred seventy-three thousand, eight hundred seventy".