986991057089 has 8 divisors (see below), whose sum is σ = 997343359488. Its totient is φ = 976642369920.

The previous prime is 986991057023. The next prime is 986991057097. The reversal of 986991057089 is 980750199689.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 986991057089 - 2²⁰ = 986990008513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (986991057389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353177 + ... + 1448694.

It is an arithmetic number, because the mean of its divisors is an integer number (124667919936).

Almost surely, 2^986991057089 is an apocalyptic number.

It is an amenable number.

986991057089 is a deficient number, since it is larger than the sum of its proper divisors (10352302399).

986991057089 is a wasteful number, since it uses less digits than its factorization.

986991057089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807615.

The product of its (nonzero) digits is 88179840, while the sum is 71.

The spelling of 986991057089 in words is "nine hundred eighty-six billion, nine hundred ninety-one million, fifty-seven thousand, eighty-nine".