123504451012 has 6 divisors (see below), whose sum is σ = 216132789278. Its totient is φ = 61752225504.

The previous prime is 123504451009. The next prime is 123504451099. The reversal of 123504451012 is 210154405321.

It can be written as a sum of positive squares in only one way, i.e., 102108367936 + 21396083076 = 319544^2 + 146274^2 .

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, 15438056373 + ... + 15438056380.

Almost surely, 2^123504451012 is an apocalyptic number.

It is an amenable number.

123504451012 is a deficient number, since it is larger than the sum of its proper divisors (92628338266).

123504451012 is a wasteful number, since it uses less digits than its factorization.

123504451012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30876112757 (or 30876112755 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 123504451012 its reverse (210154405321), we get a palindrome (333658856333).

The spelling of 123504451012 in words is "one hundred twenty-three billion, five hundred four million, four hundred fifty-one thousand, twelve".