13643433434631 has 64 divisors (see below), whose sum is σ = 24494997897216. Its totient is φ = 6523451337600.

The previous prime is 13643433434591. The next prime is 13643433434639.

It is a happy number.

13643433434631 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13643433434631 - 2²³ = 13643425046023 is a prime.

It is a super-2 number, since 2×13643433434631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13643433434639) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5504455 + ... + 7588536.

It is an arithmetic number, because the mean of its divisors is an integer number (382734342144).

Almost surely, 2^{13643433434631} is an apocalyptic number.

13643433434631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13643433434631 is a deficient number, since it is larger than the sum of its proper divisors (10851564462585).

13643433434631 is a wasteful number, since it uses less digits than its factorization.

13643433434631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13093372.

The product of its digits is 6718464, while the sum is 48.

It can be divided in two parts, 1364343 and 3434631, that added together give a palindrome (4798974).

The spelling of 13643433434631 in words is "thirteen trillion, six hundred forty-three billion, four hundred thirty-three million, four hundred thirty-four thousand, six hundred thirty-one".