468911885581 has 8 divisors (see below), whose sum is σ = 499238006904. Its totient is φ = 438890549760.

The previous prime is 468911885557. The next prime is 468911885591. The reversal of 468911885581 is 185588119864.

It can be written as a sum of positive squares in 4 ways, for example, as 18677595556 + 450234290025 = 136666^2 + 670995^2 .

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 468911885581 - 2¹¹ = 468911883533 is a prime.

It is a super-2 number, since 2×468911885581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (468911885591) 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, 76193200 + ... + 76199353.

It is an arithmetic number, because the mean of its divisors is an integer number (62404750863).

Almost surely, 2^468911885581 is an apocalyptic number.

It is an amenable number.

468911885581 is a deficient number, since it is larger than the sum of its proper divisors (30326121323).

468911885581 is a wasteful number, since it uses less digits than its factorization.

468911885581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152392751.

The product of its digits is 22118400, while the sum is 64.

The spelling of 468911885581 in words is "four hundred sixty-eight billion, nine hundred eleven million, eight hundred eighty-five thousand, five hundred eighty-one".