13950809881 has 4 divisors (see below), whose sum is σ = 14159030992. Its totient is φ = 13742588772.

The previous prime is 13950809801. The next prime is 13950809893. The reversal of 13950809881 is 18890805931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18890805931 = 239 ⋅79041029.

It is a cyclic number.

It is not a de Polignac number, because 13950809881 - 2⁷ = 13950809753 is a prime.

It is a super-3 number, since 3×13950809881³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13950809801) 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, 104110455 + ... + 104110588.

It is an arithmetic number, because the mean of its divisors is an integer number (3539757748).

Almost surely, 2^13950809881 is an apocalyptic number.

It is an amenable number.

13950809881 is a deficient number, since it is larger than the sum of its proper divisors (208221111).

13950809881 is an equidigital number, since it uses as much as digits as its factorization.

13950809881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208221110.

The product of its (nonzero) digits is 622080, while the sum is 52.

The spelling of 13950809881 in words is "thirteen billion, nine hundred fifty million, eight hundred nine thousand, eight hundred eighty-one".