43261557069 has 24 divisors (see below), whose sum is σ = 59667701760. Its totient is φ = 27880298880.

The previous prime is 43261557043. The next prime is 43261557091. The reversal of 43261557069 is 96075516234.

43261557069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43261557069 - 2⁷ = 43261556941 is a prime.

It is a super-2 number, since 2×43261557069² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43261557569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2809012 + ... + 2824370.

It is an arithmetic number, because the mean of its divisors is an integer number (2486154240).

Almost surely, 2^43261557069 is an apocalyptic number.

It is an amenable number.

43261557069 is a deficient number, since it is larger than the sum of its proper divisors (16406144691).

43261557069 is a wasteful number, since it uses less digits than its factorization.

43261557069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16401 (or 16370 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 43261557069 in words is "forty-three billion, two hundred sixty-one million, five hundred fifty-seven thousand, sixty-nine".