123170520616 has 64 divisors (see below), whose sum is σ = 277629549120. Its totient is φ = 50478059520.

The previous prime is 123170520559. The next prime is 123170520617. The reversal of 123170520616 is 616025071321.

It is not an unprimeable number, because it can be changed into a prime (123170520617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1202745 + ... + 1301128.

It is an arithmetic number, because the mean of its divisors is an integer number (4337961705).

Almost surely, 2^123170520616 is an apocalyptic number.

It is an amenable number.

123170520616 is an abundant number, since it is smaller than the sum of its proper divisors (154459028504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123170520616 is a wasteful number, since it uses less digits than its factorization.

123170520616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503946 (or 2503942 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

Adding to 123170520616 its reverse (616025071321), we get a palindrome (739195591937).

The spelling of 123170520616 in words is "one hundred twenty-three billion, one hundred seventy million, five hundred twenty thousand, six hundred sixteen".