166370133137363 has 4 divisors (see below), whose sum is σ = 166388559343440. Its totient is φ = 166351706931288.

The previous prime is 166370133137359. The next prime is 166370133137407. The reversal of 166370133137363 is 363731331073661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 166370133137363 - 2² = 166370133137359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166370133137323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9213089495 + ... + 9213107552.

It is an arithmetic number, because the mean of its divisors is an integer number (41597139835860).

Almost surely, 2^{166370133137363} is an apocalyptic number.

166370133137363 is a deficient number, since it is larger than the sum of its proper divisors (18426206077).

166370133137363 is an equidigital number, since it uses as much as digits as its factorization.

166370133137363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18426206076.

The product of its (nonzero) digits is 7715736, while the sum is 53.

The spelling of 166370133137363 in words is "one hundred sixty-six trillion, three hundred seventy billion, one hundred thirty-three million, one hundred thirty-seven thousand, three hundred sixty-three".