16166655403 has 16 divisors (see below), whose sum is σ = 17437741056. Its totient is φ = 14944295520.

The previous prime is 16166655397. The next prime is 16166655437. The reversal of 16166655403 is 30455666161.

It is a cyclic number.

It is not a de Polignac number, because 16166655403 - 2⁹ = 16166654891 is a prime.

It is a super-2 number, since 2×16166655403² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16166655403.

It is not an unprimeable number, because it can be changed into a prime (16166655493) 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, 514501 + ... + 545017.

It is an arithmetic number, because the mean of its divisors is an integer number (1089858816).

Almost surely, 2^16166655403 is an apocalyptic number.

16166655403 is a deficient number, since it is larger than the sum of its proper divisors (1271085653).

16166655403 is a wasteful number, since it uses less digits than its factorization.

16166655403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31314.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 16166655403 in words is "sixteen billion, one hundred sixty-six million, six hundred fifty-five thousand, four hundred three".