43449374667 has 32 divisors (see below), whose sum is σ = 61897605120. Its totient is φ = 27032309280.

The previous prime is 43449374641. The next prime is 43449374693. The reversal of 43449374667 is 76647394434.

It is an interprime number because it is at equal distance from previous prime (43449374641) and next prime (43449374693).

It is not a de Polignac number, because 43449374667 - 2⁷ = 43449374539 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (43449374627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1101988 + ... + 1140734.

It is an arithmetic number, because the mean of its divisors is an integer number (1934300160).

Almost surely, 2^43449374667 is an apocalyptic number.

43449374667 is a deficient number, since it is larger than the sum of its proper divisors (18448230453).

43449374667 is a wasteful number, since it uses less digits than its factorization.

43449374667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39063.

The product of its digits is 36578304, while the sum is 57.

The spelling of 43449374667 in words is "forty-three billion, four hundred forty-nine million, three hundred seventy-four thousand, six hundred sixty-seven".