166715007097 has 4 divisors (see below), whose sum is σ = 166716435060. Its totient is φ = 166713579136.

The previous prime is 166715007089. The next prime is 166715007101. The reversal of 166715007097 is 790700517661.

166715007097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30300016761 + 136414990336 = 174069^2 + 369344^2 .

It is a cyclic number.

It is not a de Polignac number, because 166715007097 - 2³ = 166715007089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166715007097.

It is not an unprimeable number, because it can be changed into a prime (166715005097) by changing a digit.

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, 521572 + ... + 778117.

It is an arithmetic number, because the mean of its divisors is an integer number (41679108765).

Almost surely, 2^166715007097 is an apocalyptic number.

It is an amenable number.

166715007097 is a deficient number, since it is larger than the sum of its proper divisors (1427963).

166715007097 is a wasteful number, since it uses less digits than its factorization.

166715007097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427962.

The product of its (nonzero) digits is 555660, while the sum is 49.

The spelling of 166715007097 in words is "one hundred sixty-six billion, seven hundred fifteen million, seven thousand, ninety-seven".