13993466439931 has 4 divisors (see below), whose sum is σ = 15265599752664. Its totient is φ = 12721333127200.

The previous prime is 13993466439853. The next prime is 13993466439989.

13993466439931 is nontrivially palindromic in base 10.

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 13993466439931 - 2¹³ = 13993466431739 is a prime.

It is a super-2 number, since 2×13993466439931² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13993466439991) 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, 636066656350 + ... + 636066656371.

It is an arithmetic number, because the mean of its divisors is an integer number (3816399938166).

Almost surely, 2^{13993466439931} is an apocalyptic number.

13993466439931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13993466439931 is a deficient number, since it is larger than the sum of its proper divisors (1272133312733).

13993466439931 is a wasteful number, since it uses less digits than its factorization.

13993466439931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272133312732.

The product of its digits is 306110016, while the sum is 70.

The spelling of 13993466439931 in words is "thirteen trillion, nine hundred ninety-three billion, four hundred sixty-six million, four hundred thirty-nine thousand, nine hundred thirty-one".