123356224546 has 4 divisors (see below), whose sum is σ = 185034336822. Its totient is φ = 61678112272.

The previous prime is 123356224531. The next prime is 123356224547. The reversal of 123356224546 is 645422653321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 117343928025 + 6012296521 = 342555^2 + 77539^2 .

It is a super-2 number, since 2×123356224546² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123356224547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30839056135 + ... + 30839056138.

Almost surely, 2^123356224546 is an apocalyptic number.

123356224546 is a deficient number, since it is larger than the sum of its proper divisors (61678112276).

123356224546 is an equidigital number, since it uses as much as digits as its factorization.

123356224546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61678112275.

The product of its digits is 1036800, while the sum is 43.

Adding to 123356224546 its reverse (645422653321), we get a palindrome (768778877867).

The spelling of 123356224546 in words is "one hundred twenty-three billion, three hundred fifty-six million, two hundred twenty-four thousand, five hundred forty-six".