123456787654322 has 16 divisors (see below), whose sum is σ = 196082422821720. Its totient is φ = 58096128023808.

The previous prime is 123456787654313. The next prime is 123456787654391. The reversal of 123456787654322 is 223456787654321.

It is a Cunningham number, because it is equal to 11111111²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 122563741864201 + 893045790121 = 11070851^2 + 945011^2 .

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, 35299913 + ... + 38639324.

Almost surely, 2^{123456787654322} is an apocalyptic number.

123456787654322 is a deficient number, since it is larger than the sum of its proper divisors (72625635167398).

123456787654322 is a wasteful number, since it uses less digits than its factorization.

123456787654322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73988365.

The product of its digits is 406425600, while the sum is 65.

Subtracting 123456787654322 from its reverse (223456787654321), we obtain a palindrome (99999999999999).

The spelling of 123456787654322 in words is "one hundred twenty-three trillion, four hundred fifty-six billion, seven hundred eighty-seven million, six hundred fifty-four thousand, three hundred twenty-two".