138787021271350 has 24 divisors (see below), whose sum is σ = 258467754067488. Its totient is φ = 55445153776800.

The previous prime is 138787021271329. The next prime is 138787021271369. The reversal of 138787021271350 is 53172120787831.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 138787021271291 and 138787021271300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1741328046 + ... + 1741407745.

It is an arithmetic number, because the mean of its divisors is an integer number (10769489752812).

Almost surely, 2^{138787021271350} is an apocalyptic number.

138787021271350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138787021271350 is a deficient number, since it is larger than the sum of its proper divisors (119680732796138).

138787021271350 is a wasteful number, since it uses less digits than its factorization.

138787021271350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482736600 (or 3482736595 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 55.

The spelling of 138787021271350 in words is "one hundred thirty-eight trillion, seven hundred eighty-seven billion, twenty-one million, two hundred seventy-one thousand, three hundred fifty".