138669813616425 has 48 divisors (see below), whose sum is σ = 282175292542080. Its totient is φ = 58515613655040.

The previous prime is 138669813616409. The next prime is 138669813616567. The reversal of 138669813616425 is 524616318966831.

It is not a de Polignac number, because 138669813616425 - 2⁴ = 138669813616409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138669813616425.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10158953880 + ... + 10158967529.

It is an arithmetic number, because the mean of its divisors is an integer number (5878651927960).

Almost surely, 2^{138669813616425} is an apocalyptic number.

138669813616425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138669813616425 is an abundant number, since it is smaller than the sum of its proper divisors (143505478925655).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138669813616425 is a wasteful number, since it uses less digits than its factorization.

138669813616425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20317921442 (or 20317921437 counting only the distinct ones).

The product of its digits is 268738560, while the sum is 69.

The spelling of 138669813616425 in words is "one hundred thirty-eight trillion, six hundred sixty-nine billion, eight hundred thirteen million, six hundred sixteen thousand, four hundred twenty-five".