166205061702051 has 8 divisors (see below), whose sum is σ = 221607126675024. Its totient is φ = 110803185598560.

The previous prime is 166205061701989. The next prime is 166205061702103. The reversal of 166205061702051 is 150207160502661.

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

It is not a de Polignac number, because 166205061702051 - 2¹⁰ = 166205061701027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166205061701994 and 166205061702012.

It is not an unprimeable number, because it can be changed into a prime (166205061702551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45151120 + ... + 48693261.

It is an arithmetic number, because the mean of its divisors is an integer number (27700890834378).

Almost surely, 2^{166205061702051} is an apocalyptic number.

166205061702051 is a deficient number, since it is larger than the sum of its proper divisors (55402064972973).

166205061702051 is an equidigital number, since it uses as much as digits as its factorization.

166205061702051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94434741.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 166205061702051 in words is "one hundred sixty-six trillion, two hundred five billion, sixty-one million, seven hundred two thousand, fifty-one".