108438545506775 has 48 divisors (see below), whose sum is σ = 147666556735488. Its totient is φ = 78338814288000.

The previous prime is 108438545506769. The next prime is 108438545506777. The reversal of 108438545506775 is 577605545834801.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-108438545506775 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108438545506777) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66753089 + ... + 68358261.

It is an arithmetic number, because the mean of its divisors is an integer number (3076386598656).

Almost surely, 2^{108438545506775} is an apocalyptic number.

108438545506775 is a deficient number, since it is larger than the sum of its proper divisors (39228011228713).

108438545506775 is a wasteful number, since it uses less digits than its factorization.

108438545506775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606832 (or 1606827 counting only the distinct ones).

The product of its (nonzero) digits is 564480000, while the sum is 68.

The spelling of 108438545506775 in words is "one hundred eight trillion, four hundred thirty-eight billion, five hundred forty-five million, five hundred six thousand, seven hundred seventy-five".