138028719425 has 6 divisors (see below), whose sum is σ = 171155612118. Its totient is φ = 110422975520.

The previous prime is 138028719407. The next prime is 138028719511. The reversal of 138028719425 is 524917820831.

It can be written as a sum of positive squares in 3 ways, for example, as 31245511696 + 106783207729 = 176764^2 + 326777^2 .

It is not a de Polignac number, because 138028719425 - 2²⁴ = 138011942209 is a prime.

It is a super-2 number, since 2×138028719425² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2760574364 + ... + 2760574413.

It is an arithmetic number, because the mean of its divisors is an integer number (28525935353).

Almost surely, 2^138028719425 is an apocalyptic number.

It is an amenable number.

138028719425 is a deficient number, since it is larger than the sum of its proper divisors (33126892693).

138028719425 is an equidigital number, since it uses as much as digits as its factorization.

138028719425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5521148787 (or 5521148782 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 138028719425 in words is "one hundred thirty-eight billion, twenty-eight million, seven hundred nineteen thousand, four hundred twenty-five".