164425717577 has 16 divisors (see below), whose sum is σ = 179851456512. Its totient is φ = 149079979920.

The previous prime is 164425717559. The next prime is 164425717583. The reversal of 164425717577 is 775717524461.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 164425717577 - 2¹⁸ = 164425455433 is a prime.

It is a super-3 number, since 3×164425717577³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164425710577) 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, 11330108 + ... + 11344610.

It is an arithmetic number, because the mean of its divisors is an integer number (11240716032).

Almost surely, 2^164425717577 is an apocalyptic number.

It is an amenable number.

164425717577 is a deficient number, since it is larger than the sum of its proper divisors (15425738935).

164425717577 is a wasteful number, since it uses less digits than its factorization.

164425717577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17188.

The product of its digits is 11524800, while the sum is 56.

The spelling of 164425717577 in words is "one hundred sixty-four billion, four hundred twenty-five million, seven hundred seventeen thousand, five hundred seventy-seven".