13424511661 has 8 divisors (see below), whose sum is σ = 14655158784. Its totient is φ = 12195570720.

The previous prime is 13424511649. The next prime is 13424511673. The reversal of 13424511661 is 16611542431.

It is an interprime number because it is at equal distance from previous prime (13424511649) and next prime (13424511673).

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

It is a cyclic number.

It is not a de Polignac number, because 13424511661 - 2¹⁹ = 13423987373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13424511631) 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, 410061 + ... + 441586.

It is an arithmetic number, because the mean of its divisors is an integer number (1831894848).

Almost surely, 2^13424511661 is an apocalyptic number.

13424511661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13424511661 is a deficient number, since it is larger than the sum of its proper divisors (1230647123).

13424511661 is a wasteful number, since it uses less digits than its factorization.

13424511661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853091.

The product of its digits is 17280, while the sum is 34.

The spelling of 13424511661 in words is "thirteen billion, four hundred twenty-four million, five hundred eleven thousand, six hundred sixty-one".