616220276840 has 128 divisors (see below), whose sum is σ = 1618757913600. Its totient is φ = 206719319040.

The previous prime is 616220276767. The next prime is 616220276897. The reversal of 616220276840 is 48672022616.

It is a junction number, because it is equal to n+sod(n) for n = 616220276791 and 616220276800.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78706046 + ... + 78713874.

It is an arithmetic number, because the mean of its divisors is an integer number (12646546200).

Almost surely, 2^616220276840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616220276840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (809378956800).

616220276840 is an abundant number, since it is smaller than the sum of its proper divisors (1002537636760).

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

616220276840 is a wasteful number, since it uses less digits than its factorization.

616220276840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13875 (or 13871 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 616220276840 in words is "six hundred sixteen billion, two hundred twenty million, two hundred seventy-six thousand, eight hundred forty".