123545510012 has 24 divisors (see below), whose sum is σ = 219616078416. Its totient is φ = 60799609728.

The previous prime is 123545510003. The next prime is 123545510047. The reversal of 123545510012 is 210015545321.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 126518 + ... + 512930.

It is an arithmetic number, because the mean of its divisors is an integer number (9150669934).

Almost surely, 2^123545510012 is an apocalyptic number.

It is an amenable number.

123545510012 is a deficient number, since it is larger than the sum of its proper divisors (96070568404).

123545510012 is a wasteful number, since it uses less digits than its factorization.

123545510012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387677 (or 387675 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 123545510012 in words is "one hundred twenty-three billion, five hundred forty-five million, five hundred ten thousand, twelve".