16661121037046 has 8 divisors (see below), whose sum is σ = 25025499800760. Its totient is φ = 8319287770128.

The previous prime is 16661121037037. The next prime is 16661121037063. The reversal of 16661121037046 is 64073012116661.

It is a happy number.

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

It is a super-2 number, since 2×16661121037046² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16661121036988 and 16661121037006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5636372351 + ... + 5636375306.

It is an arithmetic number, because the mean of its divisors is an integer number (3128187475095).

Almost surely, 2^{16661121037046} is an apocalyptic number.

16661121037046 is a deficient number, since it is larger than the sum of its proper divisors (8364378763714).

16661121037046 is a wasteful number, since it uses less digits than its factorization.

16661121037046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11272748398.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 16661121037046 in words is "sixteen trillion, six hundred sixty-one billion, one hundred twenty-one million, thirty-seven thousand, forty-six".