164635384762651 has 16 divisors (see below), whose sum is σ = 190167776055648. Its totient is φ = 140863981363200.

The previous prime is 164635384762637. The next prime is 164635384762657. The reversal of 164635384762651 is 156267483536461.

It is a cyclic number.

It is not a de Polignac number, because 164635384762651 - 2²⁵ = 164635351208219 is a prime.

It is a super-2 number, since 2×164635384762651² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164635384762657) 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, 54439411 + ... + 57383971.

It is an arithmetic number, because the mean of its divisors is an integer number (11885486003478).

Almost surely, 2^{164635384762651} is an apocalyptic number.

164635384762651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

164635384762651 is a deficient number, since it is larger than the sum of its proper divisors (25532391292997).

164635384762651 is a wasteful number, since it uses less digits than its factorization.

164635384762651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243582.

The product of its digits is 522547200, while the sum is 67.

The spelling of 164635384762651 in words is "one hundred sixty-four trillion, six hundred thirty-five billion, three hundred eighty-four million, seven hundred sixty-two thousand, six hundred fifty-one".