2651544648 has 48 divisors (see below), whose sum is σ = 7187216400. Its totient is φ = 883116000.

The previous prime is 2651544641. The next prime is 2651544659. The reversal of 2651544648 is 8464451562.

It is a happy number.

2651544648 is a `hidden beast` number, since 2 + 65 + 1 + 544 + 6 + 48 = 666.

It is not an unprimeable number, because it can be changed into a prime (2651544641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76023 + ... + 105273.

It is an arithmetic number, because the mean of its divisors is an integer number (149733675).

Almost surely, 2^2651544648 is an apocalyptic number.

It is an amenable number.

2651544648 is an abundant number, since it is smaller than the sum of its proper divisors (4535671752).

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

2651544648 is a wasteful number, since it uses less digits than its factorization.

2651544648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30522 (or 30515 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 2651544648 is about 51493.1514669669. The cubic root of 2651544648 is about 1384.0963226644.

The spelling of 2651544648 in words is "two billion, six hundred fifty-one million, five hundred forty-four thousand, six hundred forty-eight".