999934542963881 has 8 divisors (see below), whose sum is σ = 1148198364840384. Its totient is φ = 853024728593520.

The previous prime is 999934542963871. The next prime is 999934542963887. The reversal of 999934542963881 is 188369245439999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 999934542963881 - 2¹⁴ = 999934542947497 is a prime.

It is a super-2 number, since 2×999934542963881² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999934542963887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338501874950 + ... + 338501877903.

It is an arithmetic number, because the mean of its divisors is an integer number (143524795605048).

Almost surely, 2^{999934542963881} is an apocalyptic number.

It is an amenable number.

999934542963881 is a deficient number, since it is larger than the sum of its proper divisors (148263821876503).

999934542963881 is a wasteful number, since it uses less digits than its factorization.

999934542963881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677003753071.

The product of its digits is 32651735040, while the sum is 89.

The spelling of 999934542963881 in words is "nine hundred ninety-nine trillion, nine hundred thirty-four billion, five hundred forty-two million, nine hundred sixty-three thousand, eight hundred eighty-one".