5511521648 has 20 divisors (see below), whose sum is σ = 11142859728. Its totient is φ = 2635944960.

The previous prime is 5511521647. The next prime is 5511521683. The reversal of 5511521648 is 8461251155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5511521647) 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, 7488113 + ... + 7488848.

Almost surely, 2^5511521648 is an apocalyptic number.

It is an amenable number.

5511521648 is an abundant number, since it is smaller than the sum of its proper divisors (5631338080).

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

5511521648 is a wasteful number, since it uses less digits than its factorization.

5511521648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14976992 (or 14976986 counting only the distinct ones).

The product of its digits is 48000, while the sum is 38.

The square root of 5511521648 is about 74239.6231671471. The cubic root of 5511521648 is about 1766.4058967823.

The spelling of 5511521648 in words is "five billion, five hundred eleven million, five hundred twenty-one thousand, six hundred forty-eight".