138784864727125 has 32 divisors (see below), whose sum is σ = 173270391420672. Its totient is φ = 110985028200000.

The previous prime is 138784864727053. The next prime is 138784864727141. The reversal of 138784864727125 is 521727468487831.

It is not a de Polignac number, because 138784864727125 - 2¹⁹ = 138784864202837 is a prime.

It is a super-2 number, since 2×138784864727125² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4974175675 + ... + 4974203575.

It is an arithmetic number, because the mean of its divisors is an integer number (5414699731896).

Almost surely, 2^{138784864727125} is an apocalyptic number.

It is an amenable number.

138784864727125 is a deficient number, since it is larger than the sum of its proper divisors (34485526693547).

138784864727125 is an equidigital number, since it uses as much as digits as its factorization.

138784864727125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41854 (or 41844 counting only the distinct ones).

The product of its digits is 1011548160, while the sum is 73.

The spelling of 138784864727125 in words is "one hundred thirty-eight trillion, seven hundred eighty-four billion, eight hundred sixty-four million, seven hundred twenty-seven thousand, one hundred twenty-five".