123035432551 has 16 divisors (see below), whose sum is σ = 128036563200. Its totient is φ = 118102233600.

The previous prime is 123035432521. The next prime is 123035432561. The reversal of 123035432551 is 155234530321.

It is a cyclic number.

It is not a de Polignac number, because 123035432551 - 2⁵ = 123035432519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123035432521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2154495 + ... + 2210863.

It is an arithmetic number, because the mean of its divisors is an integer number (8002285200).

Almost surely, 2^123035432551 is an apocalyptic number.

123035432551 is a deficient number, since it is larger than the sum of its proper divisors (5001130649).

123035432551 is a wasteful number, since it uses less digits than its factorization.

123035432551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56970.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 123035432551 its reverse (155234530321), we get a palindrome (278269962872).

The spelling of 123035432551 in words is "one hundred twenty-three billion, thirty-five million, four hundred thirty-two thousand, five hundred fifty-one".