166656203426153 has 6 divisors (see below), whose sum is σ = 193865379495786. Its totient is φ = 142848174365232.

The previous prime is 166656203426149. The next prime is 166656203426159. The reversal of 166656203426153 is 351624302656661.

166656203426153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 130306494244969 + 36349709181184 = 11415187^2 + 6029072^2 .

It is not a de Polignac number, because 166656203426153 - 2² = 166656203426149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166656203426159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1700573504300 + ... + 1700573504397.

It is an arithmetic number, because the mean of its divisors is an integer number (32310896582631).

Almost surely, 2^{166656203426153} is an apocalyptic number.

It is an amenable number.

166656203426153 is a deficient number, since it is larger than the sum of its proper divisors (27209176069633).

166656203426153 is an equidigital number, since it uses as much as digits as its factorization.

166656203426153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401147008711 (or 3401147008704 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 56.

The spelling of 166656203426153 in words is "one hundred sixty-six trillion, six hundred fifty-six billion, two hundred three million, four hundred twenty-six thousand, one hundred fifty-three".