6123155520 has 56 divisors (see below), whose sum is σ = 19441021824. Its totient is φ = 1632841216.

The previous prime is 6123155503. The next prime is 6123155531. The reversal of 6123155520 is 255513216.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 in 7 ways as a sum of consecutive naturals, for example, 3188184 + ... + 3190103.

It is an arithmetic number, because the mean of its divisors is an integer number (347161104).

Almost surely, 2^6123155520 is an apocalyptic number.

6123155520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6123155520 is an abundant number, since it is smaller than the sum of its proper divisors (13317866304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6123155520 is a wasteful number, since it uses less digits than its factorization.

6123155520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6378307 (or 6378297 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 6123155520 is about 78250.5943747394. The cubic root of 6123155520 is about 1829.4691762680.

Adding to 6123155520 its reverse (255513216), we get a palindrome (6378668736).

The spelling of 6123155520 in words is "six billion, one hundred twenty-three million, one hundred fifty-five thousand, five hundred twenty".