43774067681 has 8 divisors (see below), whose sum is σ = 46082318400. Its totient is φ = 41466252240.

The previous prime is 43774067663. The next prime is 43774067741. The reversal of 43774067681 is 18676047734.

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 43774067681 - 2¹⁰ = 43774066657 is a prime.

It is a super-2 number, since 2×43774067681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43774067641) 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, 108791 + ... + 315251.

It is an arithmetic number, because the mean of its divisors is an integer number (5760289800).

Almost surely, 2^43774067681 is an apocalyptic number.

It is an amenable number.

43774067681 is a deficient number, since it is larger than the sum of its proper divisors (2308250719).

43774067681 is a wasteful number, since it uses less digits than its factorization.

43774067681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217639.

The product of its (nonzero) digits is 4741632, while the sum is 53.

The spelling of 43774067681 in words is "forty-three billion, seven hundred seventy-four million, sixty-seven thousand, six hundred eighty-one".