166415635061434 has 48 divisors (see below), whose sum is σ = 276997843017000. Its totient is φ = 74924080394240.

The previous prime is 166415635061413. The next prime is 166415635061461. The reversal of 166415635061434 is 434160536514661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 166395732905809 + 19902155625 = 12899447^2 + 141075^2 .

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9296532 + ... + 20475760.

Almost surely, 2^{166415635061434} is an apocalyptic number.

166415635061434 is a deficient number, since it is larger than the sum of its proper divisors (110582207955566).

166415635061434 is a wasteful number, since it uses less digits than its factorization.

166415635061434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11179839 (or 11179828 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 55.

The spelling of 166415635061434 in words is "one hundred sixty-six trillion, four hundred fifteen billion, six hundred thirty-five million, sixty-one thousand, four hundred thirty-four".