12140735865 has 16 divisors (see below), whose sum is σ = 19430107200. Its totient is φ = 6473415872.

The previous prime is 12140735857. The next prime is 12140735899. The reversal of 12140735865 is 56853704121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12140735865 - 2³ = 12140735857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40410 + ... + 160979.

It is an arithmetic number, because the mean of its divisors is an integer number (1214381700).

Almost surely, 2^12140735865 is an apocalyptic number.

12140735865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12140735865 is a deficient number, since it is larger than the sum of its proper divisors (7289371335).

12140735865 is a wasteful number, since it uses less digits than its factorization.

12140735865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205416.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 12140735865 in words is "twelve billion, one hundred forty million, seven hundred thirty-five thousand, eight hundred sixty-five".