40881257568 has 72 divisors (see below), whose sum is σ = 116332398000. Its totient is φ = 13618139904.

The previous prime is 40881257513. The next prime is 40881257591. The reversal of 40881257568 is 86575218804.

40881257568 is a `hidden beast` number, since 4 + 0 + 8 + 8 + 1 + 2 + 575 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400293 + ... + 491931.

It is an arithmetic number, because the mean of its divisors is an integer number (1615727750).

Almost surely, 2^40881257568 is an apocalyptic number.

40881257568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40881257568 is an abundant number, since it is smaller than the sum of its proper divisors (75451140432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40881257568 is a wasteful number, since it uses less digits than its factorization.

40881257568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93204 (or 93193 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 54.

The spelling of 40881257568 in words is "forty billion, eight hundred eighty-one million, two hundred fifty-seven thousand, five hundred sixty-eight".