633252172081 has 8 divisors (see below), whose sum is σ = 636466708800. Its totient is φ = 630037959408.

The previous prime is 633252172079. The next prime is 633252172121. The reversal of 633252172081 is 180271252336.

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 633252172081 - 2¹ = 633252172079 is a prime.

It is a super-2 number, since 2×633252172081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (633252172181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4489035 + ... + 4627951.

It is an arithmetic number, because the mean of its divisors is an integer number (79558338600).

Almost surely, 2^633252172081 is an apocalyptic number.

It is an amenable number.

633252172081 is a deficient number, since it is larger than the sum of its proper divisors (3214536719).

633252172081 is a wasteful number, since it uses less digits than its factorization.

633252172081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162023.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 633252172081 in words is "six hundred thirty-three billion, two hundred fifty-two million, one hundred seventy-two thousand, eighty-one".