123851187338 has 4 divisors (see below), whose sum is σ = 185776781010. Its totient is φ = 61925593668.

The previous prime is 123851187323. The next prime is 123851187367. The reversal of 123851187338 is 833781158321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 110095885249 + 13755302089 = 331807^2 + 117283^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30962796833 + ... + 30962796836.

Almost surely, 2^123851187338 is an apocalyptic number.

123851187338 is a deficient number, since it is larger than the sum of its proper divisors (61925593672).

123851187338 is an equidigital number, since it uses as much as digits as its factorization.

123851187338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61925593671.

The product of its digits is 967680, while the sum is 50.

The spelling of 123851187338 in words is "one hundred twenty-three billion, eight hundred fifty-one million, one hundred eighty-seven thousand, three hundred thirty-eight".