401767240581 has 48 divisors (see below), whose sum is σ = 703163260800. Its totient is φ = 215795073024.

The previous prime is 401767240531. The next prime is 401767240597. The reversal of 401767240581 is 185042767104.

401767240581 is a `hidden beast` number, since 4 + 0 + 1 + 7 + 67 + 2 + 4 + 0 + 581 = 666.

It is not a de Polignac number, because 401767240581 - 2¹¹ = 401767238533 is a prime.

It is a super-2 number, since 2×401767240581² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401767240531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 579690 + ... + 1067508.

It is an arithmetic number, because the mean of its divisors is an integer number (14649234600).

Almost surely, 2^401767240581 is an apocalyptic number.

It is an amenable number.

401767240581 is a deficient number, since it is larger than the sum of its proper divisors (301396020219).

401767240581 is a wasteful number, since it uses less digits than its factorization.

401767240581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488618 (or 488615 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 401767240581 in words is "four hundred one billion, seven hundred sixty-seven million, two hundred forty thousand, five hundred eighty-one".