2655439680 has 112 divisors (see below), whose sum is σ = 8659002240. Its totient is φ = 688969728.

The previous prime is 2655439669. The next prime is 2655439681. The reversal of 2655439680 is 869345562.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2655439681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1860 + ... + 72899.

It is an arithmetic number, because the mean of its divisors is an integer number (77312520).

Almost surely, 2^2655439680 is an apocalyptic number.

2655439680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2655439680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4329501120).

2655439680 is an abundant number, since it is smaller than the sum of its proper divisors (6003562560).

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

2655439680 is a wasteful number, since it uses less digits than its factorization.

2655439680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74816 (or 74806 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The square root of 2655439680 is about 51530.9584618800. The cubic root of 2655439680 is about 1384.7737217598.

The spelling of 2655439680 in words is "two billion, six hundred fifty-five million, four hundred thirty-nine thousand, six hundred eighty".