16661155754 has 8 divisors (see below), whose sum is σ = 24996423648. Its totient is φ = 8329014540.

The previous prime is 16661155741. The next prime is 16661155793. The reversal of 16661155754 is 45755116661.

16661155754 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×16661155754² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16661155699 and 16661155708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768302 + ... + 789689.

It is an arithmetic number, because the mean of its divisors is an integer number (3124552956).

Almost surely, 2^16661155754 is an apocalyptic number.

16661155754 is a deficient number, since it is larger than the sum of its proper divisors (8335267894).

16661155754 is a wasteful number, since it uses less digits than its factorization.

16661155754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563340.

The product of its digits is 756000, while the sum is 47.

The spelling of 16661155754 in words is "sixteen billion, six hundred sixty-one million, one hundred fifty-five thousand, seven hundred fifty-four".