2651856480 has 720 divisors, whose sum is σ = 11561855760. Its totient is φ = 550029312.

The previous prime is 2651856457. The next prime is 2651856491. The reversal of 2651856480 is 846581562.

2651856480 is a `hidden beast` number, since 2 + 6 + 5 + 1 + 8 + 564 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 44946691 + ... + 44946749.

It is an arithmetic number, because the mean of its divisors is an integer number (16058133).

Almost surely, 2^2651856480 is an apocalyptic number.

2651856480 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 2651856480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5780927880).

2651856480 is an abundant number, since it is smaller than the sum of its proper divisors (8909999280).

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

2651856480 is a wasteful number, since it uses less digits than its factorization.

2651856480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 2651856480 is about 51496.1792757482. The cubic root of 2651856480 is about 1384.1505789142.

The spelling of 2651856480 in words is "two billion, six hundred fifty-one million, eight hundred fifty-six thousand, four hundred eighty".