616455123140 has 12 divisors (see below), whose sum is σ = 1294555758636. Its totient is φ = 246582049248.

The previous prime is 616455123121. The next prime is 616455123143. The reversal of 616455123140 is 41321554616.

It can be written as a sum of positive squares in 2 ways, for example, as 81602778244 + 534852344896 = 285662^2 + 731336^2 .

It is a junction number, because it is equal to n+sod(n) for n = 616455123094 and 616455123103.

It is not an unprimeable number, because it can be changed into a prime (616455123143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15411378059 + ... + 15411378098.

It is an arithmetic number, because the mean of its divisors is an integer number (107879646553).

Almost surely, 2^616455123140 is an apocalyptic number.

It is an amenable number.

616455123140 is an abundant number, since it is smaller than the sum of its proper divisors (678100635496).

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

616455123140 is a wasteful number, since it uses less digits than its factorization.

616455123140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30822756166 (or 30822756164 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

Adding to 616455123140 its reverse (41321554616), we get a palindrome (657776677756).

The spelling of 616455123140 in words is "six hundred sixteen billion, four hundred fifty-five million, one hundred twenty-three thousand, one hundred forty".