164621281439053 has 16 divisors (see below), whose sum is σ = 165460711878000. Its totient is φ = 163783568719872.

The previous prime is 164621281439051. The next prime is 164621281439099. The reversal of 164621281439053 is 350934182126461.

It can be written as a sum of positive squares in 8 ways, for example, as 15980270086089 + 148641011352964 = 3997533^2 + 12191842^2 .

It is a cyclic number.

It is not a de Polignac number, because 164621281439053 - 2¹ = 164621281439051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164621281438985 and 164621281439003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164621281439051) 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, 3990121201 + ... + 3990162457.

It is an arithmetic number, because the mean of its divisors is an integer number (10341294492375).

Almost surely, 2^{164621281439053} is an apocalyptic number.

It is an amenable number.

164621281439053 is a deficient number, since it is larger than the sum of its proper divisors (839430438947).

164621281439053 is a wasteful number, since it uses less digits than its factorization.

164621281439053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61584.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 164621281439053 in words is "one hundred sixty-four trillion, six hundred twenty-one billion, two hundred eighty-one million, four hundred thirty-nine thousand, fifty-three".