43105728551 has 8 divisors (see below), whose sum is σ = 43399329408. Its totient is φ = 42812235000.

The previous prime is 43105728521. The next prime is 43105728569. The reversal of 43105728551 is 15582750134.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43105728551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43105728499 and 43105728508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43105728521) 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, 883916 + ... + 931406.

It is an arithmetic number, because the mean of its divisors is an integer number (5424916176).

Almost surely, 2^43105728551 is an apocalyptic number.

43105728551 is a deficient number, since it is larger than the sum of its proper divisors (293600857).

43105728551 is a wasteful number, since it uses less digits than its factorization.

43105728551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53653.

The product of its (nonzero) digits is 168000, while the sum is 41.

The spelling of 43105728551 in words is "forty-three billion, one hundred five million, seven hundred twenty-eight thousand, five hundred fifty-one".