438156066616 has 8 divisors (see below), whose sum is σ = 821542624920. Its totient is φ = 219078033304.

The previous prime is 438156066613. The next prime is 438156066617. The reversal of 438156066616 is 616660651834.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438156066611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27384754156 + ... + 27384754171.

It is an arithmetic number, because the mean of its divisors is an integer number (102692828115).

Almost surely, 2^438156066616 is an apocalyptic number.

It is an amenable number.

438156066616 is a deficient number, since it is larger than the sum of its proper divisors (383386558304).

438156066616 is a wasteful number, since it uses less digits than its factorization.

438156066616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54769508333 (or 54769508329 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 438156066616 in words is "four hundred thirty-eight billion, one hundred fifty-six million, sixty-six thousand, six hundred sixteen".