438540423616 has 28 divisors (see below), whose sum is σ = 875991776080. Its totient is φ = 217818086400.

The previous prime is 438540423589. The next prime is 438540423623. The reversal of 438540423616 is 616324045834.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22679721 + ... + 22699048.

Almost surely, 2^438540423616 is an apocalyptic number.

It is an amenable number.

438540423616 is a deficient number, since it is larger than the sum of its proper divisors (437451352464).

438540423616 is a wasteful number, since it uses less digits than its factorization.

438540423616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45378932 (or 45378922 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 46.

The spelling of 438540423616 in words is "four hundred thirty-eight billion, five hundred forty million, four hundred twenty-three thousand, six hundred sixteen".