123045685083898 has 4 divisors (see below), whose sum is σ = 184568527625850. Its totient is φ = 61522842541948.

The previous prime is 123045685083869. The next prime is 123045685083929. The reversal of 123045685083898 is 898380586540321.

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., 96837664215769 + 26208020868129 = 9840613^2 + 5119377^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30761421270973 + ... + 30761421270976.

Almost surely, 2^{123045685083898} is an apocalyptic number.

123045685083898 is a deficient number, since it is larger than the sum of its proper divisors (61522842541952).

123045685083898 is an equidigital number, since it uses as much as digits as its factorization.

123045685083898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61522842541951.

The product of its (nonzero) digits is 398131200, while the sum is 70.

The spelling of 123045685083898 in words is "one hundred twenty-three trillion, forty-five billion, six hundred eighty-five million, eighty-three thousand, eight hundred ninety-eight".