9888875444431 has 4 divisors (see below), whose sum is σ = 9888904053864. Its totient is φ = 9888846835000.

The previous prime is 9888875444389. The next prime is 9888875444519. The reversal of 9888875444431 is 1344445788889.

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 9888875444431 - 2¹³ = 9888875436239 is a prime.

It is a super-2 number, since 2×9888875444431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9888875444131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13779820 + ... + 14479681.

It is an arithmetic number, because the mean of its divisors is an integer number (2472226013466).

Almost surely, 2^{9888875444431} is an apocalyptic number.

9888875444431 is a deficient number, since it is larger than the sum of its proper divisors (28609433).

9888875444431 is a wasteful number, since it uses less digits than its factorization.

9888875444431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28609432.

The product of its digits is 990904320, while the sum is 73.

The spelling of 9888875444431 in words is "nine trillion, eight hundred eighty-eight billion, eight hundred seventy-five million, four hundred forty-four thousand, four hundred thirty-one".