866788526230386 has 16 divisors (see below), whose sum is σ = 1738300695659904. Its totient is φ = 288142234876944.

The previous prime is 866788526230339. The next prime is 866788526230433. The reversal of 866788526230386 is 683032625887668.

It is an interprime number because it is at equal distance from previous prime (866788526230339) and next prime (866788526230433).

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, 196818464245 + ... + 196818468648.

It is an arithmetic number, because the mean of its divisors is an integer number (108643793478744).

Almost surely, 2^{866788526230386} is an apocalyptic number.

866788526230386 is an abundant number, since it is smaller than the sum of its proper divisors (871512169429518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866788526230386 is a wasteful number, since it uses less digits than its factorization.

866788526230386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393636933265.

The product of its (nonzero) digits is 6688604160, while the sum is 78.

The spelling of 866788526230386 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, five hundred twenty-six million, two hundred thirty thousand, three hundred eighty-six".