123153543501 has 16 divisors (see below), whose sum is σ = 165612652800. Its totient is φ = 81400438080.

The previous prime is 123153543497. The next prime is 123153543503. The reversal of 123153543501 is 105345351321.

It is not a de Polignac number, because 123153543501 - 2² = 123153543497 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123153543503) 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, 12805 + ... + 496458.

It is an arithmetic number, because the mean of its divisors is an integer number (10350790800).

Almost surely, 2^123153543501 is an apocalyptic number.

It is an amenable number.

123153543501 is a deficient number, since it is larger than the sum of its proper divisors (42459109299).

123153543501 is a wasteful number, since it uses less digits than its factorization.

123153543501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509956.

The product of its (nonzero) digits is 27000, while the sum is 33.

Adding to 123153543501 its reverse (105345351321), we get a palindrome (228498894822).

The spelling of 123153543501 in words is "one hundred twenty-three billion, one hundred fifty-three million, five hundred forty-three thousand, five hundred one".