9988832821742 has 4 divisors (see below), whose sum is σ = 14983249232616. Its totient is φ = 4994416410870.

The previous prime is 9988832821741. The next prime is 9988832821753. The reversal of 9988832821742 is 2471282388899.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×9988832821742² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988832821741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2497208205434 + ... + 2497208205437.

It is an arithmetic number, because the mean of its divisors is an integer number (3745812308154).

Almost surely, 2^{9988832821742} is an apocalyptic number.

9988832821742 is a deficient number, since it is larger than the sum of its proper divisors (4994416410874).

9988832821742 is a wasteful number, since it uses less digits than its factorization.

9988832821742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4994416410873.

The product of its digits is 222953472, while the sum is 71.

The spelling of 9988832821742 in words is "nine trillion, nine hundred eighty-eight billion, eight hundred thirty-two million, eight hundred twenty-one thousand, seven hundred forty-two".