866545270115012 has 12 divisors (see below), whose sum is σ = 1605657412272060. Its totient is φ = 407786009465856.

The previous prime is 866545270114963. The next prime is 866545270115059. The reversal of 866545270115012 is 210511072545668.

It can be written as a sum of positive squares in 2 ways, for example, as 721321223915776 + 145224046199236 = 26857424^2 + 12050894^2 .

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, 6371656397837 + ... + 6371656397972.

It is an arithmetic number, because the mean of its divisors is an integer number (133804784356005).

Almost surely, 2^{866545270115012} is an apocalyptic number.

It is an amenable number.

866545270115012 is a deficient number, since it is larger than the sum of its proper divisors (739112142157048).

866545270115012 is a wasteful number, since it uses less digits than its factorization.

866545270115012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12743312795830 (or 12743312795828 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 53.

The spelling of 866545270115012 in words is "eight hundred sixty-six trillion, five hundred forty-five billion, two hundred seventy million, one hundred fifteen thousand, twelve".