9993875551 has 4 divisors (see below), whose sum is σ = 10902409704. Its totient is φ = 9085341400.

The previous prime is 9993875519. The next prime is 9993875599. The reversal of 9993875551 is 1555783999.

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

It is a cyclic number.

It is not a de Polignac number, because 9993875551 - 2⁵ = 9993875519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9993875551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9993875351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454267060 + ... + 454267081.

It is an arithmetic number, because the mean of its divisors is an integer number (2725602426).

Almost surely, 2^9993875551 is an apocalyptic number.

9993875551 is a deficient number, since it is larger than the sum of its proper divisors (908534153).

9993875551 is a wasteful number, since it uses less digits than its factorization.

9993875551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908534152.

The product of its digits is 15309000, while the sum is 61.

The square root of 9993875551 is about 99969.3730649542. The cubic root of 9993875551 is about 2153.9947760325.

The spelling of 9993875551 in words is "nine billion, nine hundred ninety-three million, eight hundred seventy-five thousand, five hundred fifty-one".