166515390038 has 8 divisors (see below), whose sum is σ = 250198594632. Its totient is φ = 83115858496.

The previous prime is 166515390023. The next prime is 166515390059. The reversal of 166515390038 is 830093515661.

166515390038 is digitally balanced in base 2, because in such base 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 junction number, because it is equal to n+sod(n) for n = 166515389974 and 166515390001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70916795 + ... + 70919142.

It is an arithmetic number, because the mean of its divisors is an integer number (31274824329).

Almost surely, 2^166515390038 is an apocalyptic number.

166515390038 is a deficient number, since it is larger than the sum of its proper divisors (83683204594).

166515390038 is a wasteful number, since it uses less digits than its factorization.

166515390038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141836526.

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 166515390038 in words is "one hundred sixty-six billion, five hundred fifteen million, three hundred ninety thousand, thirty-eight".