164340640460143 has 16 divisors (see below), whose sum is σ = 187946461414656. Its totient is φ = 140766973557120.

The previous prime is 164340640460123. The next prime is 164340640460149. The reversal of 164340640460143 is 341064046043461.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 164340640460143 - 2⁵ = 164340640460111 is a prime.

It is a super-2 number, since 2×164340640460143² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164340640460093 and 164340640460102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164340640460149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278470288 + ... + 279059818.

It is an arithmetic number, because the mean of its divisors is an integer number (11746653838416).

Almost surely, 2^{164340640460143} is an apocalyptic number.

164340640460143 is a deficient number, since it is larger than the sum of its proper divisors (23605820954513).

164340640460143 is a wasteful number, since it uses less digits than its factorization.

164340640460143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616734.

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 164340640460143 in words is "one hundred sixty-four trillion, three hundred forty billion, six hundred forty million, four hundred sixty thousand, one hundred forty-three".