123464615506 has 4 divisors (see below), whose sum is σ = 185196923262. Its totient is φ = 61732307752.

The previous prime is 123464615489. The next prime is 123464615543. The reversal of 123464615506 is 605516464321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605516464321 = 264391 ⋅2290231.

It can be written as a sum of positive squares in only one way, i.e., 120405530025 + 3059085481 = 346995^2 + 55309^2 .

It is a super-2 number, since 2×123464615506² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 30866153875 + ... + 30866153878.

Almost surely, 2^123464615506 is an apocalyptic number.

123464615506 is a deficient number, since it is larger than the sum of its proper divisors (61732307756).

123464615506 is an equidigital number, since it uses as much as digits as its factorization.

123464615506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61732307755.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 123464615506 in words is "one hundred twenty-three billion, four hundred sixty-four million, six hundred fifteen thousand, five hundred six".