986868158661 has 128 divisors (see below), whose sum is σ = 1917094625280. Its totient is φ = 486758937600.

The previous prime is 986868158641. The next prime is 986868158663. The reversal of 986868158661 is 166851868689.

986868158661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 986868158661 - 2⁹ = 986868158149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 986868158661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (986868158663) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3271341 + ... + 3560253.

It is an arithmetic number, because the mean of its divisors is an integer number (14977301760).

Almost surely, 2^986868158661 is an apocalyptic number.

It is an amenable number.

986868158661 is a deficient number, since it is larger than the sum of its proper divisors (930226466619).

986868158661 is a wasteful number, since it uses less digits than its factorization.

986868158661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289024 (or 289018 counting only the distinct ones).

The product of its digits is 238878720, while the sum is 72.

The spelling of 986868158661 in words is "nine hundred eighty-six billion, eight hundred sixty-eight million, one hundred fifty-eight thousand, six hundred sixty-one".