16612441735681 has 8 divisors (see below), whose sum is σ = 18419756560128. Its totient is φ = 14854642386000.

The previous prime is 16612441735679. The next prime is 16612441735723. The reversal of 16612441735681 is 18653714421661.

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 16612441735681 - 2¹ = 16612441735679 is a prime.

It is a super-2 number, since 2×16612441735681² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16612441735621) 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, 12378867985 + ... + 12378869326.

It is an arithmetic number, because the mean of its divisors is an integer number (2302469570016).

Almost surely, 2^{16612441735681} is an apocalyptic number.

16612441735681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16612441735681 is a deficient number, since it is larger than the sum of its proper divisors (1807314824447).

16612441735681 is a wasteful number, since it uses less digits than its factorization.

16612441735681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24757737383.

The product of its digits is 5806080, while the sum is 55.

The spelling of 16612441735681 in words is "sixteen trillion, six hundred twelve billion, four hundred forty-one million, seven hundred thirty-five thousand, six hundred eighty-one".