138886455845 has 16 divisors (see below), whose sum is σ = 169800382080. Its totient is φ = 109026772800.

The previous prime is 138886455817. The next prime is 138886455847. The reversal of 138886455845 is 548554688831.

It is a happy number.

It is not a de Polignac number, because 138886455845 - 2¹² = 138886451749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138886455847) 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, 415601 + ... + 671190.

It is an arithmetic number, because the mean of its divisors is an integer number (10612523880).

Almost surely, 2^138886455845 is an apocalyptic number.

It is an amenable number.

138886455845 is a deficient number, since it is larger than the sum of its proper divisors (30913926235).

138886455845 is a wasteful number, since it uses less digits than its factorization.

138886455845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087276.

The product of its digits is 147456000, while the sum is 65.

The spelling of 138886455845 in words is "one hundred thirty-eight billion, eight hundred eighty-six million, four hundred fifty-five thousand, eight hundred forty-five".