16661124117061 has 8 divisors (see below), whose sum is σ = 18569673938880. Its totient is φ = 14855739150528.

The previous prime is 16661124117047. The next prime is 16661124117101. The reversal of 16661124117061 is 16071142116661.

It is a happy number.

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 16661124117061 - 2³³ = 16652534182469 is a prime.

It is a super-2 number, since 2×16661124117061² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16661124116999 and 16661124117017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16661124118061) 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, 25791213481 + ... + 25791214126.

It is an arithmetic number, because the mean of its divisors is an integer number (2321209242360).

Almost surely, 2^{16661124117061} is an apocalyptic number.

It is an amenable number.

16661124117061 is a deficient number, since it is larger than the sum of its proper divisors (1908549821819).

16661124117061 is a wasteful number, since it uses less digits than its factorization.

16661124117061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51582427643.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 16661124117061 in words is "sixteen trillion, six hundred sixty-one billion, one hundred twenty-four million, one hundred seventeen thousand, sixty-one".