43774113779 has 18 divisors (see below), whose sum is σ = 48146632884. Its totient is φ = 39469771440.

The previous prime is 43774113697. The next prime is 43774113793. The reversal of 43774113779 is 97731147734.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-43774113779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43774113779.

It is not an unprimeable number, because it can be changed into a prime (43774113679) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 138088529 + ... + 138088845.

It is an arithmetic number, because the mean of its divisors is an integer number (2674812938).

Almost surely, 2^43774113779 is an apocalyptic number.

43774113779 is a deficient number, since it is larger than the sum of its proper divisors (4372519105).

43774113779 is an frugal number, since it uses more digits than its factorization.

43774113779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 527 counting only the distinct ones).

The product of its digits is 3111696, while the sum is 53.

The spelling of 43774113779 in words is "forty-three billion, seven hundred seventy-four million, one hundred thirteen thousand, seven hundred seventy-nine".