123452633435640 has 64 divisors (see below), whose sum is σ = 370588366287360. Its totient is φ = 32900216384640.

The previous prime is 123452633435611. The next prime is 123452633435641. The reversal of 123452633435640 is 46534336254321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123452633435641) 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, 319897996 + ... + 320283675.

It is an arithmetic number, because the mean of its divisors is an integer number (5790443223240).

Almost surely, 2^{123452633435640} is an apocalyptic number.

123452633435640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123452633435640 is an abundant number, since it is smaller than the sum of its proper divisors (247135732851720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123452633435640 is a wasteful number, since it uses less digits than its factorization.

123452633435640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640183292 (or 640183288 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 51.

Adding to 123452633435640 its reverse (46534336254321), we get a palindrome (169986969689961).

The spelling of 123452633435640 in words is "one hundred twenty-three trillion, four hundred fifty-two billion, six hundred thirty-three million, four hundred thirty-five thousand, six hundred forty".