866153513871886 has 16 divisors (see below), whose sum is σ = 1338618567825648. Its totient is φ = 420141834705600.

The previous prime is 866153513871869. The next prime is 866153513871901. The reversal of 866153513871886 is 688178315351668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48627518260 + ... + 48627536071.

It is an arithmetic number, because the mean of its divisors is an integer number (83663660489103).

Almost surely, 2^{866153513871886} is an apocalyptic number.

866153513871886 is a deficient number, since it is larger than the sum of its proper divisors (472465053953762).

866153513871886 is a wasteful number, since it uses less digits than its factorization.

866153513871886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97255054467.

The product of its digits is 1393459200, while the sum is 76.

The spelling of 866153513871886 in words is "eight hundred sixty-six trillion, one hundred fifty-three billion, five hundred thirteen million, eight hundred seventy-one thousand, eight hundred eighty-six".