12047815087 has 16 divisors (see below), whose sum is σ = 15023054592. Its totient is φ = 9386406720.

The previous prime is 12047815069. The next prime is 12047815111. The reversal of 12047815087 is 78051874021.

It is a cyclic number.

It is not a de Polignac number, because 12047815087 - 2⁷ = 12047814959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12047815057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942523 + ... + 955219.

It is an arithmetic number, because the mean of its divisors is an integer number (938940912).

Almost surely, 2^12047815087 is an apocalyptic number.

12047815087 is a deficient number, since it is larger than the sum of its proper divisors (2975239505).

12047815087 is a wasteful number, since it uses less digits than its factorization.

12047815087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25038.

The product of its (nonzero) digits is 125440, while the sum is 43.

The spelling of 12047815087 in words is "twelve billion, forty-seven million, eight hundred fifteen thousand, eighty-seven".