13990821611 has 8 divisors (see below), whose sum is σ = 15291920784. Its totient is φ = 12721848480.

The previous prime is 13990821599. The next prime is 13990821613. The reversal of 13990821611 is 11612809931.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13990821611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13990821613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8030600 + ... + 8032341.

It is an arithmetic number, because the mean of its divisors is an integer number (1911490098).

Almost surely, 2^13990821611 is an apocalyptic number.

13990821611 is a deficient number, since it is larger than the sum of its proper divisors (1301099173).

13990821611 is a wasteful number, since it uses less digits than its factorization.

13990821611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16063021.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 13990821611 in words is "thirteen billion, nine hundred ninety million, eight hundred twenty-one thousand, six hundred eleven".