166157190433163 has 4 divisors (see below), whose sum is σ = 166180004828808. Its totient is φ = 166134376037520.

The previous prime is 166157190433159. The next prime is 166157190433211. The reversal of 166157190433163 is 361334091751661.

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 166157190433163 - 2² = 166157190433159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166157190433099 and 166157190433108.

It is not an unprimeable number, because it can be changed into a prime (166157190433103) 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, 11407186898 + ... + 11407201463.

It is an arithmetic number, because the mean of its divisors is an integer number (41545001207202).

Almost surely, 2^{166157190433163} is an apocalyptic number.

166157190433163 is a deficient number, since it is larger than the sum of its proper divisors (22814395645).

166157190433163 is an equidigital number, since it uses as much as digits as its factorization.

166157190433163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22814395644.

The product of its (nonzero) digits is 7348320, while the sum is 56.

The spelling of 166157190433163 in words is "one hundred sixty-six trillion, one hundred fifty-seven billion, one hundred ninety million, four hundred thirty-three thousand, one hundred sixty-three".