252791668069 has 8 divisors (see below), whose sum is σ = 256438462680. Its totient is φ = 249162794496.

The previous prime is 252791668067. The next prime is 252791668121. The reversal of 252791668069 is 960866197252.

It can be written as a sum of positive squares in 4 ways, for example, as 1259327169 + 251532340900 = 35487^2 + 501530^2 .

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 252791668069 - 2¹ = 252791668067 is a prime.

It is a super-2 number, since 2×252791668069² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252791667998 and 252791668016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252791668061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4451844 + ... + 4508269.

It is an arithmetic number, because the mean of its divisors is an integer number (32054807835).

Almost surely, 2^252791668069 is an apocalyptic number.

It is an amenable number.

252791668069 is a deficient number, since it is larger than the sum of its proper divisors (3646794611).

252791668069 is an equidigital number, since it uses as much as digits as its factorization.

252791668069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8960519.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 252791668069 in words is "two hundred fifty-two billion, seven hundred ninety-one million, six hundred sixty-eight thousand, sixty-nine".