9889266694840 has 64 divisors (see below), whose sum is σ = 24134845845600. Its totient is φ = 3625152302592.

The previous prime is 9889266694807. The next prime is 9889266694849. The reversal of 9889266694840 is 484966629889.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9889266694849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68337147 + ... + 68481706.

Almost surely, 2^{9889266694840} is an apocalyptic number.

It is an amenable number.

9889266694840 is an abundant number, since it is smaller than the sum of its proper divisors (14245579150760).

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

9889266694840 is a wasteful number, since it uses less digits than its factorization.

9889266694840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136819016 (or 136819012 counting only the distinct ones).

The product of its (nonzero) digits is 2579890176, while the sum is 79.

The spelling of 9889266694840 in words is "nine trillion, eight hundred eighty-nine billion, two hundred sixty-six million, six hundred ninety-four thousand, eight hundred forty".