123451233445 has 8 divisors (see below), whose sum is σ = 148148346744. Its totient is φ = 98756409024.

The previous prime is 123451233419. The next prime is 123451233449. The reversal of 123451233445 is 544332154321.

It can be written as a sum of positive squares in 4 ways, for example, as 15099002884 + 108352230561 = 122878^2 + 329169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123451233445 - 2⁷ = 123451233317 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 (123451233449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451234 + ... + 671203.

It is an arithmetic number, because the mean of its divisors is an integer number (18518543343).

Almost surely, 2^123451233445 is an apocalyptic number.

It is an amenable number.

123451233445 is a deficient number, since it is larger than the sum of its proper divisors (24697113299).

123451233445 is a wasteful number, since it uses less digits than its factorization.

123451233445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144439.

The product of its digits is 172800, while the sum is 37.

Adding to 123451233445 its reverse (544332154321), we get a palindrome (667783387766).

The spelling of 123451233445 in words is "one hundred twenty-three billion, four hundred fifty-one million, two hundred thirty-three thousand, four hundred forty-five".