138120237848845 has 32 divisors (see below), whose sum is σ = 190001402961408. Its totient is φ = 94421729196288.

The previous prime is 138120237848819. The next prime is 138120237848867. The reversal of 138120237848845 is 548848732021831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138120237848845 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12930039 + ... + 21057691.

It is an arithmetic number, because the mean of its divisors is an integer number (5937543842544).

Almost surely, 2^{138120237848845} is an apocalyptic number.

It is an amenable number.

138120237848845 is a deficient number, since it is larger than the sum of its proper divisors (51881165112563).

138120237848845 is an equidigital number, since it uses as much as digits as its factorization.

138120237848845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8129149.

The product of its (nonzero) digits is 82575360, while the sum is 64.

The spelling of 138120237848845 in words is "one hundred thirty-eight trillion, one hundred twenty billion, two hundred thirty-seven million, eight hundred forty-eight thousand, eight hundred forty-five".