166556160526402 has 8 divisors (see below), whose sum is σ = 249854335272396. Its totient is φ = 83271382102272.

The previous prime is 166556160526391. The next prime is 166556160526421. The reversal of 166556160526402 is 204625061655661.

It can be written as a sum of positive squares in 2 ways, for example, as 161530856451441 + 5025304074961 = 12709479^2 + 2241719^2 .

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, 3349049383 + ... + 3349099114.

Almost surely, 2^{166556160526402} is an apocalyptic number.

166556160526402 is a deficient number, since it is larger than the sum of its proper divisors (83298174745994).

166556160526402 is a wasteful number, since it uses less digits than its factorization.

166556160526402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6698160932.

The product of its (nonzero) digits is 15552000, while the sum is 55.

The spelling of 166556160526402 in words is "one hundred sixty-six trillion, five hundred fifty-six billion, one hundred sixty million, five hundred twenty-six thousand, four hundred two".