43628733769 has 4 divisors (see below), whose sum is σ = 43742647296. Its totient is φ = 43514820244.

The previous prime is 43628733749. The next prime is 43628733781. The reversal of 43628733769 is 96733782634.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96733782634 = 2 ⋅48366891317.

It is a cyclic number.

It is not a de Polignac number, because 43628733769 - 2⁹ = 43628733257 is a prime.

It is a super-2 number, since 2×43628733769² (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 (43628733749) 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, 56956189 + ... + 56956954.

It is an arithmetic number, because the mean of its divisors is an integer number (10935661824).

Almost surely, 2^43628733769 is an apocalyptic number.

It is an amenable number.

43628733769 is a deficient number, since it is larger than the sum of its proper divisors (113913527).

43628733769 is a wasteful number, since it uses less digits than its factorization.

43628733769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113913526.

The product of its digits is 27433728, while the sum is 58.

The spelling of 43628733769 in words is "forty-three billion, six hundred twenty-eight million, seven hundred thirty-three thousand, seven hundred sixty-nine".