15867358666887 has 192 divisors, whose sum is σ = 27791404892160. Its totient is φ = 7972143379200.

The previous prime is 15867358666823. The next prime is 15867358666889. The reversal of 15867358666887 is 78866685376851.

It is not a de Polignac number, because 15867358666887 - 2⁶ = 15867358666823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15867358666889) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1549087788 + ... + 1549098030.

It is an arithmetic number, because the mean of its divisors is an integer number (144746900480).

Almost surely, 2^{15867358666887} is an apocalyptic number.

15867358666887 is a deficient number, since it is larger than the sum of its proper divisors (11924046225273).

15867358666887 is a wasteful number, since it uses less digits than its factorization.

15867358666887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10714 (or 10707 counting only the distinct ones).

The product of its digits is 19508428800, while the sum is 84.

The spelling of 15867358666887 in words is "fifteen trillion, eight hundred sixty-seven billion, three hundred fifty-eight million, six hundred sixty-six thousand, eight hundred eighty-seven".