43768359921779 has 4 divisors (see below), whose sum is σ = 43795096856784. Its totient is φ = 43741622986776.

The previous prime is 43768359921757. The next prime is 43768359921829. The reversal of 43768359921779 is 97712995386734.

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

It is a cyclic number.

It is not a de Polignac number, because 43768359921779 - 2²⁰ = 43768358873203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43768359921179) 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, 13368465047 + ... + 13368468320.

It is an arithmetic number, because the mean of its divisors is an integer number (10948774214196).

Almost surely, 2^{43768359921779} is an apocalyptic number.

43768359921779 is a deficient number, since it is larger than the sum of its proper divisors (26736935005).

43768359921779 is a wasteful number, since it uses less digits than its factorization.

43768359921779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26736935004.

The product of its digits is 4320812160, while the sum is 80.

The spelling of 43768359921779 in words is "forty-three trillion, seven hundred sixty-eight billion, three hundred fifty-nine million, nine hundred twenty-one thousand, seven hundred seventy-nine".