164255356654665 has 48 divisors (see below), whose sum is σ = 274739617457088. Its totient is φ = 83791662691968.

The previous prime is 164255356654657. The next prime is 164255356654667. The reversal of 164255356654665 is 566456653552461.

164255356654665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164255356654665 - 2³ = 164255356654657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a self number, because there is not a number n which added to its sum of digits gives 164255356654665.

It is not an unprimeable number, because it can be changed into a prime (164255356654667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 299009982 + ... + 299558808.

It is an arithmetic number, because the mean of its divisors is an integer number (5723742030356).

Almost surely, 2^{164255356654665} is an apocalyptic number.

164255356654665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164255356654665 is a deficient number, since it is larger than the sum of its proper divisors (110484260802423).

164255356654665 is a wasteful number, since it uses less digits than its factorization.

164255356654665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586598 (or 586575 counting only the distinct ones).

The product of its digits is 2332800000, while the sum is 69.

The spelling of 164255356654665 in words is "one hundred sixty-four trillion, two hundred fifty-five billion, three hundred fifty-six million, six hundred fifty-four thousand, six hundred sixty-five".