164552337857 has 4 divisors (see below), whose sum is σ = 164553724116. Its totient is φ = 164550951600.

The previous prime is 164552337793. The next prime is 164552337877. The reversal of 164552337857 is 758733255461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122422312321 + 42130025536 = 349889^2 + 205256^2 .

It is a cyclic number.

It is not a de Polignac number, because 164552337857 - 2⁶ = 164552337793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164552337877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496478 + ... + 758679.

It is an arithmetic number, because the mean of its divisors is an integer number (41138431029).

Almost surely, 2^164552337857 is an apocalyptic number.

It is an amenable number.

164552337857 is a deficient number, since it is larger than the sum of its proper divisors (1386259).

164552337857 is a wasteful number, since it uses less digits than its factorization.

164552337857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386258.

The product of its digits is 21168000, while the sum is 56.

The spelling of 164552337857 in words is "one hundred sixty-four billion, five hundred fifty-two million, three hundred thirty-seven thousand, eight hundred fifty-seven".