164573621377 has 16 divisors (see below), whose sum is σ = 181875545280. Its totient is φ = 147672806400.

The previous prime is 164573621327. The next prime is 164573621383. The reversal of 164573621377 is 773126375461.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164573621377 is a prime.

It is a super-2 number, since 2×164573621377² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164573621327) 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, 24874 + ... + 574252.

It is an arithmetic number, because the mean of its divisors is an integer number (11367221580).

Almost surely, 2^164573621377 is an apocalyptic number.

It is an amenable number.

164573621377 is a deficient number, since it is larger than the sum of its proper divisors (17301923903).

164573621377 is a wasteful number, since it uses less digits than its factorization.

164573621377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549744.

The product of its digits is 4445280, while the sum is 52.

The spelling of 164573621377 in words is "one hundred sixty-four billion, five hundred seventy-three million, six hundred twenty-one thousand, three hundred seventy-seven".