43199568457 has 4 divisors (see below), whose sum is σ = 43221246100. Its totient is φ = 43177890816.

The previous prime is 43199568437. The next prime is 43199568487. The reversal of 43199568457 is 75486599134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17303034681 + 25896533776 = 131541^2 + 160924^2 .

It is a cyclic number.

It is not a de Polignac number, because 43199568457 - 2¹⁵ = 43199535689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43199568395 and 43199568404.

It is not an unprimeable number, because it can be changed into a prime (43199568427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10835832 + ... + 10839817.

It is an arithmetic number, because the mean of its divisors is an integer number (10805311525).

Almost surely, 2^43199568457 is an apocalyptic number.

It is an amenable number.

43199568457 is a deficient number, since it is larger than the sum of its proper divisors (21677643).

43199568457 is a wasteful number, since it uses less digits than its factorization.

43199568457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21677642.

The product of its digits is 32659200, while the sum is 61.

The spelling of 43199568457 in words is "forty-three billion, one hundred ninety-nine million, five hundred sixty-eight thousand, four hundred fifty-seven".