123124377644 has 24 divisors (see below), whose sum is σ = 220665858336. Its totient is φ = 60094160000.

The previous prime is 123124377631. The next prime is 123124377647. The reversal of 123124377644 is 446773421321.

It is a super-2 number, since 2×123124377644² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123124377595 and 123124377604.

It is not an unprimeable number, because it can be changed into a prime (123124377647) 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 in 7 ways as a sum of consecutive naturals, for example, 2117537 + ... + 2174904.

It is an arithmetic number, because the mean of its divisors is an integer number (9194410764).

Almost surely, 2^123124377644 is an apocalyptic number.

It is an amenable number.

123124377644 is a deficient number, since it is larger than the sum of its proper divisors (97541480692).

123124377644 is a wasteful number, since it uses less digits than its factorization.

123124377644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292617 (or 4292615 counting only the distinct ones).

The product of its digits is 677376, while the sum is 44.

Adding to 123124377644 its reverse (446773421321), we get a palindrome (569897798965).

The spelling of 123124377644 in words is "one hundred twenty-three billion, one hundred twenty-four million, three hundred seventy-seven thousand, six hundred forty-four".