43694006653018 has 4 divisors (see below), whose sum is σ = 65541009979530. Its totient is φ = 21847003326508.

The previous prime is 43694006653009. The next prime is 43694006653021. The reversal of 43694006653018 is 81035660049634.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 40027727602009 + 3666279051009 = 6326747^2 + 1914753^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 43694006653018.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10923501663253 + ... + 10923501663256.

Almost surely, 2^{43694006653018} is an apocalyptic number.

43694006653018 is a deficient number, since it is larger than the sum of its proper divisors (21847003326512).

43694006653018 is a wasteful number, since it uses less digits than its factorization.

43694006653018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21847003326511.

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 43694006653018 in words is "forty-three trillion, six hundred ninety-four billion, six million, six hundred fifty-three thousand, eighteen".