9864532877838 has 32 divisors (see below), whose sum is σ = 20121234948000. Its totient is φ = 3222939073536.

The previous prime is 9864532877833. The next prime is 9864532877861. The reversal of 9864532877838 is 8387782354689.

9864532877838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×9864532877838³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9864532877833) 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, 15051063 + ... + 15692786.

It is an arithmetic number, because the mean of its divisors is an integer number (628788592125).

Almost surely, 2^{9864532877838} is an apocalyptic number.

9864532877838 is an abundant number, since it is smaller than the sum of its proper divisors (10256702070162).

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

9864532877838 is a wasteful number, since it uses less digits than its factorization.

9864532877838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30744916.

The product of its digits is 3901685760, while the sum is 78.

The spelling of 9864532877838 in words is "nine trillion, eight hundred sixty-four billion, five hundred thirty-two million, eight hundred seventy-seven thousand, eight hundred thirty-eight".