2651478860 has 24 divisors (see below), whose sum is σ = 5569831680. Its totient is φ = 1060262784.

The previous prime is 2651478779. The next prime is 2651478871. The reversal of 2651478860 is 688741562.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51797 + ... + 89363.

It is an arithmetic number, because the mean of its divisors is an integer number (232076320).

Almost surely, 2^2651478860 is an apocalyptic number.

2651478860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2651478860 is an abundant number, since it is smaller than the sum of its proper divisors (2918352820).

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

2651478860 is a wasteful number, since it uses less digits than its factorization.

2651478860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41105 (or 41103 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 2651478860 is about 51492.5126596091. The cubic root of 2651478860 is about 1384.0848755403.

The spelling of 2651478860 in words is "two billion, six hundred fifty-one million, four hundred seventy-eight thousand, eight hundred sixty".