43499811427 has 16 divisors (see below), whose sum is σ = 46276116480. Its totient is φ = 40798229472.

The previous prime is 43499811359. The next prime is 43499811449. The reversal of 43499811427 is 72411899434.

It is a happy number.

It is not a de Polignac number, because 43499811427 - 2¹⁵ = 43499778659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43499811727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2134078 + ... + 2154364.

It is an arithmetic number, because the mean of its divisors is an integer number (2892257280).

Almost surely, 2^43499811427 is an apocalyptic number.

43499811427 is a deficient number, since it is larger than the sum of its proper divisors (2776305053).

43499811427 is a wasteful number, since it uses less digits than its factorization.

43499811427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22122.

The product of its digits is 1741824, while the sum is 52.

The spelling of 43499811427 in words is "forty-three billion, four hundred ninety-nine million, eight hundred eleven thousand, four hundred twenty-seven".