166415676538 has 8 divisors (see below), whose sum is σ = 250002308160. Its totient is φ = 83081573820.

The previous prime is 166415676503. The next prime is 166415676547. The reversal of 166415676538 is 835676514661.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63130578 + ... + 63133213.

It is an arithmetic number, because the mean of its divisors is an integer number (31250288520).

Almost surely, 2^166415676538 is an apocalyptic number.

166415676538 is a deficient number, since it is larger than the sum of its proper divisors (83586631622).

166415676538 is a wasteful number, since it uses less digits than its factorization.

166415676538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126264452.

The product of its digits is 21772800, while the sum is 58.

The spelling of 166415676538 in words is "one hundred sixty-six billion, four hundred fifteen million, six hundred seventy-six thousand, five hundred thirty-eight".