2547801664 has 28 divisors (see below), whose sum is σ = 5179111308. Its totient is φ = 1242828800.

The previous prime is 2547801653. The next prime is 2547801667. The reversal of 2547801664 is 4661087452.

2547801664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 361304064 + 2186497600 = 19008^2 + 46760^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2547801664.

It is not an unprimeable number, because it can be changed into a prime (2547801667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482857 + ... + 488104.

It is an arithmetic number, because the mean of its divisors is an integer number (184968261).

Almost surely, 2^2547801664 is an apocalyptic number.

It is an amenable number.

2547801664 is an abundant number, since it is smaller than the sum of its proper divisors (2631309644).

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

2547801664 is an equidigital number, since it uses as much as digits as its factorization.

2547801664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971014 (or 971004 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 2547801664 is about 50475.7532286543. The cubic root of 2547801664 is about 1365.8044990306.

The spelling of 2547801664 in words is "two billion, five hundred forty-seven million, eight hundred one thousand, six hundred sixty-four".