41378341581 has 24 divisors (see below), whose sum is σ = 64151451000. Its totient is φ = 25607218176.

The previous prime is 41378341579. The next prime is 41378341583. The reversal of 41378341581 is 18514387314.

41378341581 is a `hidden beast` number, since 4 + 1 + 37 + 8 + 34 + 1 + 581 = 666.

41378341581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (41378341579) and next prime (41378341583).

It can be written as a sum of positive squares in 4 ways, for example, as 7721136900 + 33657204681 = 87870^2 + 183459^2 .

It is not a de Polignac number, because 41378341581 - 2¹ = 41378341579 is a prime.

It is a super-2 number, since 2×41378341581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41378341583) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1841206 + ... + 1863543.

It is an arithmetic number, because the mean of its divisors is an integer number (2672977125).

Almost surely, 2^41378341581 is an apocalyptic number.

It is an amenable number.

41378341581 is a deficient number, since it is larger than the sum of its proper divisors (22773109419).

41378341581 is a wasteful number, since it uses less digits than its factorization.

41378341581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3704845 (or 3704842 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The spelling of 41378341581 in words is "forty-one billion, three hundred seventy-eight million, three hundred forty-one thousand, five hundred eighty-one".