123243351425550 has 36 divisors (see below), whose sum is σ = 331113804164520. Its totient is φ = 32864893713360.

The previous prime is 123243351425531. The next prime is 123243351425569. The reversal of 123243351425550 is 55524153342321.

123243351425550 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 4 + 3 + 3 + 51 + 42 + 5 + 550 = 666.

123243351425550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (123243351425531) and next prime (123243351425569).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 123243351425496 and 123243351425505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 136937056690 + ... + 136937057589.

Almost surely, 2^{123243351425550} is an apocalyptic number.

123243351425550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123243351425550 is an abundant number, since it is smaller than the sum of its proper divisors (207870452738970).

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

123243351425550 is a wasteful number, since it uses less digits than its factorization.

123243351425550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273874114297 (or 273874114289 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

The spelling of 123243351425550 in words is "one hundred twenty-three trillion, two hundred forty-three billion, three hundred fifty-one million, four hundred twenty-five thousand, five hundred fifty".