166154064367 has 2 divisors, whose sum is σ = 166154064368. Its totient is φ = 166154064366.

The previous prime is 166154064343. The next prime is 166154064409. The reversal of 166154064367 is 763460451661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166154064367 - 2¹⁹ = 166153540079 is a prime.

It is a super-2 number, since 2×166154064367² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166154064367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166154064317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83077032183 + 83077032184.

It is an arithmetic number, because the mean of its divisors is an integer number (83077032184).

Almost surely, 2^166154064367 is an apocalyptic number.

166154064367 is a deficient number, since it is larger than the sum of its proper divisors (1).

166154064367 is an equidigital number, since it uses as much as digits as its factorization.

166154064367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 166154064367 in words is "one hundred sixty-six billion, one hundred fifty-four million, sixty-four thousand, three hundred sixty-seven".