43661044358 has 4 divisors (see below), whose sum is σ = 65491566540. Its totient is φ = 21830522178.

The previous prime is 43661044351. The next prime is 43661044363. The reversal of 43661044358 is 85344016634.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43661044351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10915261088 + ... + 10915261091.

It is an arithmetic number, because the mean of its divisors is an integer number (16372891635).

Almost surely, 2^43661044358 is an apocalyptic number.

43661044358 is a deficient number, since it is larger than the sum of its proper divisors (21830522182).

43661044358 is a wasteful number, since it uses less digits than its factorization.

43661044358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21830522181.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 43661044358 in words is "forty-three billion, six hundred sixty-one million, forty-four thousand, three hundred fifty-eight".