164546966545 has 8 divisors (see below), whose sum is σ = 212645310696. Its totient is φ = 121511606016.

The previous prime is 164546966543. The next prime is 164546966557. The reversal of 164546966545 is 545669645461.

It can be written as a sum of positive squares in 4 ways, for example, as 2141190529 + 162405776016 = 46273^2 + 402996^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164546966545 - 2¹ = 164546966543 is a prime.

It is a super-4 number, since 4×164546966545⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (164546966543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1265745832 + ... + 1265745961.

It is an arithmetic number, because the mean of its divisors is an integer number (26580663837).

Almost surely, 2^164546966545 is an apocalyptic number.

It is an amenable number.

164546966545 is a deficient number, since it is larger than the sum of its proper divisors (48098344151).

164546966545 is a wasteful number, since it uses less digits than its factorization.

164546966545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531491811.

The product of its digits is 93312000, while the sum is 61.

The spelling of 164546966545 in words is "one hundred sixty-four billion, five hundred forty-six million, nine hundred sixty-six thousand, five hundred forty-five".