43688261121 has 8 divisors (see below), whose sum is σ = 61677545184. Its totient is φ = 27412242240.

The previous prime is 43688261107. The next prime is 43688261213. The reversal of 43688261121 is 12116288634.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43688261121 - 2¹³ = 43688252929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43688261101) 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, 428316235 + ... + 428316336.

It is an arithmetic number, because the mean of its divisors is an integer number (7709693148).

Almost surely, 2^43688261121 is an apocalyptic number.

It is an amenable number.

43688261121 is a deficient number, since it is larger than the sum of its proper divisors (17989284063).

43688261121 is a wasteful number, since it uses less digits than its factorization.

43688261121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856632591.

The product of its digits is 110592, while the sum is 42.

The spelling of 43688261121 in words is "forty-three billion, six hundred eighty-eight million, two hundred sixty-one thousand, one hundred twenty-one".