12887109971 has 8 divisors (see below), whose sum is σ = 12972193104. Its totient is φ = 12802065120.

The previous prime is 12887109959. The next prime is 12887110009. The reversal of 12887109971 is 17990178821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12887109971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12887109071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1039616 + ... + 1051938.

It is an arithmetic number, because the mean of its divisors is an integer number (1621524138).

Almost surely, 2^12887109971 is an apocalyptic number.

12887109971 is a deficient number, since it is larger than the sum of its proper divisors (85083133).

12887109971 is a wasteful number, since it uses less digits than its factorization.

12887109971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19141.

The product of its (nonzero) digits is 508032, while the sum is 53.

The spelling of 12887109971 in words is "twelve billion, eight hundred eighty-seven million, one hundred nine thousand, nine hundred seventy-one".