138875137363 has 4 divisors (see below), whose sum is σ = 139175084128. Its totient is φ = 138575190600.

The previous prime is 138875137211. The next prime is 138875137369. The reversal of 138875137363 is 363731578831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 363731578831 = 11677 ⋅31149403.

It is a cyclic number.

It is not a de Polignac number, because 138875137363 - 2²¹ = 138873040211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138875137369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149972688 + ... + 149973613.

It is an arithmetic number, because the mean of its divisors is an integer number (34793771032).

Almost surely, 2^138875137363 is an apocalyptic number.

138875137363 is a deficient number, since it is larger than the sum of its proper divisors (299946765).

138875137363 is an equidigital number, since it uses as much as digits as its factorization.

138875137363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299946764.

The product of its digits is 7620480, while the sum is 55.

The spelling of 138875137363 in words is "one hundred thirty-eight billion, eight hundred seventy-five million, one hundred thirty-seven thousand, three hundred sixty-three".