2554660656 has 120 divisors (see below), whose sum is σ = 7632368640. Its totient is φ = 795312000.

The previous prime is 2554660651. The next prime is 2554660657. The reversal of 2554660656 is 6560664552.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2554660651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187681 + ... + 200831.

It is an arithmetic number, because the mean of its divisors is an integer number (63603072).

Almost surely, 2^2554660656 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 2554660656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3816184320).

2554660656 is an abundant number, since it is smaller than the sum of its proper divisors (5077707984).

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

2554660656 is a wasteful number, since it uses less digits than its factorization.

2554660656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13255 (or 13246 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The square root of 2554660656 is about 50543.6509959461. The cubic root of 2554660656 is about 1367.0290381014.

The spelling of 2554660656 in words is "two billion, five hundred fifty-four million, six hundred sixty thousand, six hundred fifty-six".