138750019635 has 16 divisors (see below), whose sum is σ = 229161323520. Its totient is φ = 71612913120.

The previous prime is 138750019633. The next prime is 138750019643. The reversal of 138750019635 is 536910057831.

It is not a de Polignac number, because 138750019635 - 2¹ = 138750019633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138750019633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149193105 + ... + 149194034.

It is an arithmetic number, because the mean of its divisors is an integer number (14322582720).

Almost surely, 2^138750019635 is an apocalyptic number.

138750019635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138750019635 is a deficient number, since it is larger than the sum of its proper divisors (90411303885).

138750019635 is a wasteful number, since it uses less digits than its factorization.

138750019635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298387178.

The product of its (nonzero) digits is 680400, while the sum is 48.

The spelling of 138750019635 in words is "one hundred thirty-eight billion, seven hundred fifty million, nineteen thousand, six hundred thirty-five".