166798502361 has 12 divisors (see below), whose sum is σ = 240935061588. Its totient is φ = 111197205504.

The previous prime is 166798502357. The next prime is 166798502369. The reversal of 166798502361 is 163205897661.

166798502361 is a `hidden beast` number, since 1 + 6 + 6 + 79 + 8 + 502 + 3 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 147214179225 + 19584323136 = 383685^2 + 139944^2 .

It is not a de Polignac number, because 166798502361 - 2² = 166798502357 is a prime.

It is a super-4 number, since 4×166798502361⁴ (a number of 46 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 166798502298 and 166798502307.

It is not an unprimeable number, because it can be changed into a prime (166798502369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 681321 + ... + 893193.

It is an arithmetic number, because the mean of its divisors is an integer number (20077921799).

Almost surely, 2^166798502361 is an apocalyptic number.

It is an amenable number.

166798502361 is a deficient number, since it is larger than the sum of its proper divisors (74136559227).

166798502361 is a wasteful number, since it uses less digits than its factorization.

166798502361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299352 (or 299349 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 166798502361 in words is "one hundred sixty-six billion, seven hundred ninety-eight million, five hundred two thousand, three hundred sixty-one".