123166003456 has 18 divisors (see below), whose sum is σ = 245850890222. Its totient is φ = 61583001600.

The previous prime is 123166003393. The next prime is 123166003463. The reversal of 123166003456 is 654300661321.

It can be written as a sum of positive squares in only one way, i.e., 91059097600 + 32106905856 = 301760^2 + 179184^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240558345 + ... + 240558856.

Almost surely, 2^123166003456 is an apocalyptic number.

123166003456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123166003456 is a deficient number, since it is larger than the sum of its proper divisors (122684886766).

123166003456 is an frugal number, since it uses more digits than its factorization.

123166003456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481117217 (or 481117203 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

Adding to 123166003456 its reverse (654300661321), we get a palindrome (777466664777).

The spelling of 123166003456 in words is "one hundred twenty-three billion, one hundred sixty-six million, three thousand, four hundred fifty-six".