43400661074011 has 4 divisors (see below), whose sum is σ = 43400728933272. Its totient is φ = 43400593214752.

The previous prime is 43400661073999. The next prime is 43400661074021. The reversal of 43400661074011 is 11047016600434.

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 43400661074011 - 2⁴³ = 34604568051803 is a prime.

It is a super-2 number, since 2×43400661074011² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43400661074021) 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, 32961061 + ... + 34252486.

It is an arithmetic number, because the mean of its divisors is an integer number (10850182233318).

Almost surely, 2^{43400661074011} is an apocalyptic number.

43400661074011 is a deficient number, since it is larger than the sum of its proper divisors (67859261).

43400661074011 is an equidigital number, since it uses as much as digits as its factorization.

43400661074011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67859260.

The product of its (nonzero) digits is 48384, while the sum is 37.

Adding to 43400661074011 its reverse (11047016600434), we get a palindrome (54447677674445).

The spelling of 43400661074011 in words is "forty-three trillion, four hundred billion, six hundred sixty-one million, seventy-four thousand, eleven".