43640506581422 has 16 divisors (see below), whose sum is σ = 66913393135680. Its totient is φ = 21336873468768.

The previous prime is 43640506581409. The next prime is 43640506581437. The reversal of 43640506581422 is 22418560504634.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207710897 + ... + 207920892.

It is an arithmetic number, because the mean of its divisors is an integer number (4182087070980).

Almost surely, 2^{43640506581422} is an apocalyptic number.

43640506581422 is a deficient number, since it is larger than the sum of its proper divisors (23272886554258).

43640506581422 is a wasteful number, since it uses less digits than its factorization.

43640506581422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415632955.

The product of its (nonzero) digits is 5529600, while the sum is 50.

The spelling of 43640506581422 in words is "forty-three trillion, six hundred forty billion, five hundred six million, five hundred eighty-one thousand, four hundred twenty-two".