16674877847661 has 16 divisors (see below), whose sum is σ = 24256170785088. Its totient is φ = 10105235321600.

The previous prime is 16674877847623. The next prime is 16674877847707.

16674877847661 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 16674877847661 - 2⁶ = 16674877847597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16674877846661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18330510 + ... + 19218671.

It is an arithmetic number, because the mean of its divisors is an integer number (1516010674068).

Almost surely, 2^{16674877847661} is an apocalyptic number.

16674877847661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16674877847661 is a deficient number, since it is larger than the sum of its proper divisors (7581292937427).

16674877847661 is a wasteful number, since it uses less digits than its factorization.

16674877847661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37562652.

The product of its digits is 3186376704, while the sum is 78.

The spelling of 16674877847661 in words is "sixteen trillion, six hundred seventy-four billion, eight hundred seventy-seven million, eight hundred forty-seven thousand, six hundred sixty-one".