166415635061433 has 6 divisors (see below), whose sum is σ = 240378139533194. Its totient is φ = 110943756707616.

The previous prime is 166415635061413. The next prime is 166415635061461. The reversal of 166415635061433 is 334160536514661.

166415635061433 is a `hidden beast` number, since 1 + 6 + 6 + 4 + 15 + 6 + 3 + 5 + 0 + 614 + 3 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 125000270843904 + 41415364217529 = 11180352^2 + 6435477^2 .

It is not a de Polignac number, because 166415635061433 - 2²⁴ = 166415618284217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166415635061433.

It is not an unprimeable number, because it can be changed into a prime (166415635061413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9245313058960 + ... + 9245313058977.

Almost surely, 2^{166415635061433} is an apocalyptic number.

It is an amenable number.

166415635061433 is a deficient number, since it is larger than the sum of its proper divisors (73962504471761).

166415635061433 is a wasteful number, since it uses less digits than its factorization.

166415635061433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18490626117943 (or 18490626117940 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 54.

The spelling of 166415635061433 in words is "one hundred sixty-six trillion, four hundred fifteen billion, six hundred thirty-five million, sixty-one thousand, four hundred thirty-three".