43457381568 has 42 divisors (see below), whose sum is σ = 124562739444. Its totient is φ = 14485793664.

The previous prime is 43457381567. The next prime is 43457381621. The reversal of 43457381568 is 86518375434.

43457381568 is a `hidden beast` number, since 4 + 3 + 4 + 5 + 73 + 8 + 1 + 568 = 666.

It is a super-3 number, since 3×43457381568³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (43457381563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37722846 + ... + 37723997.

Almost surely, 2^43457381568 is an apocalyptic number.

43457381568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

43457381568 is an abundant number, since it is smaller than the sum of its proper divisors (81105357876).

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

43457381568 is a wasteful number, since it uses less digits than its factorization.

43457381568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75446861 (or 75446848 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 43457381568 in words is "forty-three billion, four hundred fifty-seven million, three hundred eighty-one thousand, five hundred sixty-eight".