5655537640 has 16 divisors (see below), whose sum is σ = 12724959780. Its totient is φ = 2262215040.

The previous prime is 5655537617. The next prime is 5655537647. The reversal of 5655537640 is 467355565.

It can be written as a sum of positive squares in 2 ways, for example, as 4836089764 + 819447876 = 69542^2 + 28626^2 .

It is not an unprimeable number, because it can be changed into a prime (5655537647) 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, 70694181 + ... + 70694260.

Almost surely, 2^5655537640 is an apocalyptic number.

It is an amenable number.

5655537640 is an abundant number, since it is smaller than the sum of its proper divisors (7069422140).

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

5655537640 is a wasteful number, since it uses less digits than its factorization.

5655537640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141388452 (or 141388448 counting only the distinct ones).

The product of its (nonzero) digits is 1890000, while the sum is 46.

The square root of 5655537640 is about 75203.3087038064. The cubic root of 5655537640 is about 1781.6591902202.

The spelling of 5655537640 in words is "five billion, six hundred fifty-five million, five hundred thirty-seven thousand, six hundred forty".