123152335551 has 16 divisors (see below), whose sum is σ = 208511891200. Its totient is φ = 70372763064.

The previous prime is 123152335507. The next prime is 123152335571. The reversal of 123152335551 is 155533251321.

123152335551 is a `hidden beast` number, since 1 + 2 + 31 + 523 + 3 + 55 + 51 = 666.

It is not a de Polignac number, because 123152335551 - 2¹⁰ = 123152334527 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 (123152335571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325799641 + ... + 325800018.

It is an arithmetic number, because the mean of its divisors is an integer number (13031993200).

Almost surely, 2^123152335551 is an apocalyptic number.

123152335551 is a deficient number, since it is larger than the sum of its proper divisors (85359555649).

123152335551 is an equidigital number, since it uses as much as digits as its factorization.

123152335551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651599675 (or 651599669 counting only the distinct ones).

The product of its digits is 67500, while the sum is 36.

Adding to 123152335551 its reverse (155533251321), we get a palindrome (278685586872).

The spelling of 123152335551 in words is "one hundred twenty-three billion, one hundred fifty-two million, three hundred thirty-five thousand, five hundred fifty-one".