616655315220 has 48 divisors (see below), whose sum is σ = 1973297010048. Its totient is φ = 140949786240.

The previous prime is 616655315197. The next prime is 616655315251. The reversal of 616655315220 is 22513556616.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 734113051 + ... + 734113890.

It is an arithmetic number, because the mean of its divisors is an integer number (41110354376).

Almost surely, 2^616655315220 is an apocalyptic number.

616655315220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

616655315220 is an abundant number, since it is smaller than the sum of its proper divisors (1356641694828).

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

616655315220 is a wasteful number, since it uses less digits than its factorization.

616655315220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468226960 (or 1468226958 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 616655315220 in words is "six hundred sixteen billion, six hundred fifty-five million, three hundred fifteen thousand, two hundred twenty".