166206153547 has 8 divisors (see below), whose sum is σ = 189958968576. Its totient is φ = 142455608232.

The previous prime is 166206153539. The next prime is 166206153577. The reversal of 166206153547 is 745351602661.

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

It is not a de Polignac number, because 166206153547 - 2³ = 166206153539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166206153497 and 166206153506.

It is not an unprimeable number, because it can be changed into a prime (166206153577) 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, 407503 + ... + 706024.

It is an arithmetic number, because the mean of its divisors is an integer number (23744871072).

Almost surely, 2^166206153547 is an apocalyptic number.

166206153547 is a deficient number, since it is larger than the sum of its proper divisors (23752815029).

166206153547 is a wasteful number, since it uses less digits than its factorization.

166206153547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134857.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 166206153547 in words is "one hundred sixty-six billion, two hundred six million, one hundred fifty-three thousand, five hundred forty-seven".