123551423222530 has 16 divisors (see below), whose sum is σ = 222767591426424. Its totient is φ = 49337229372160.

The previous prime is 123551423222519. The next prime is 123551423222561. The reversal of 123551423222530 is 35222324155321.

It can be written as a sum of positive squares in 4 ways, for example, as 113233881781881 + 10317541440649 = 10641141^2 + 3212093^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10417483381 + ... + 10417495240.

Almost surely, 2^{123551423222530} is an apocalyptic number.

123551423222530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123551423222530 is a deficient number, since it is larger than the sum of its proper divisors (99216168203894).

123551423222530 is a wasteful number, since it uses less digits than its factorization.

123551423222530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20834979221.

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 123551423222530 its reverse (35222324155321), we get a palindrome (158773747377851).

The spelling of 123551423222530 in words is "one hundred twenty-three trillion, five hundred fifty-one billion, four hundred twenty-three million, two hundred twenty-two thousand, five hundred thirty".