866158050931712 has 352 divisors, whose sum is σ = 2219389492767744. Its totient is φ = 328053738700800.

The previous prime is 866158050931711. The next prime is 866158050931787. The reversal of 866158050931712 is 217139050851668.

It is a tau number, because it is divible by the number of its divisors (352).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866158050931711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 714782528 + ... + 715993280.

It is an arithmetic number, because the mean of its divisors is an integer number (6305083786272).

Almost surely, 2^{866158050931712} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866158050931712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1109694746383872).

866158050931712 is an abundant number, since it is smaller than the sum of its proper divisors (1353231441836032).

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

866158050931712 is a wasteful number, since it uses less digits than its factorization.

866158050931712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211045 (or 1211027 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 62.

The spelling of 866158050931712 in words is "eight hundred sixty-six trillion, one hundred fifty-eight billion, fifty million, nine hundred thirty-one thousand, seven hundred twelve".