138449874793600 has 48 divisors (see below), whose sum is σ = 342014456333970. Its totient is φ = 55379949916160.

The previous prime is 138449874793597. The next prime is 138449874793603. The reversal of 138449874793600 is 6397478944831.

It is an interprime number because it is at equal distance from previous prime (138449874793597) and next prime (138449874793603).

It can be written as a sum of positive squares in 3 ways, for example, as 95530919616064 + 42918955177536 = 9773992^2 + 6551256^2 .

It is not an unprimeable number, because it can be changed into a prime (138449874793603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21632789737 + ... + 21632796136.

Almost surely, 2^{138449874793600} is an apocalyptic number.

138449874793600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138449874793600 is an abundant number, since it is smaller than the sum of its proper divisors (203564581540370).

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

138449874793600 is an equidigital number, since it uses as much as digits as its factorization.

138449874793600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43265585897 (or 43265585880 counting only the distinct ones).

The product of its (nonzero) digits is 877879296, while the sum is 73.

The spelling of 138449874793600 in words is "one hundred thirty-eight trillion, four hundred forty-nine billion, eight hundred seventy-four million, seven hundred ninety-three thousand, six hundred".