5645431540 has 48 divisors (see below), whose sum is σ = 13560220800. Its totient is φ = 1933978752.

The previous prime is 5645431531. The next prime is 5645431541. The reversal of 5645431540 is 451345465.

It is a self number, because there is not a number n which added to its sum of digits gives 5645431540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645431541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160246 + ... + 192274.

It is an arithmetic number, because the mean of its divisors is an integer number (282504600).

Almost surely, 2^5645431540 is an apocalyptic number.

It is an amenable number.

5645431540 is an abundant number, since it is smaller than the sum of its proper divisors (7914789260).

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

5645431540 is a wasteful number, since it uses less digits than its factorization.

5645431540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33304 (or 33302 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 5645431540 is about 75136.0868025478. The cubic root of 5645431540 is about 1780.5973187865.

The spelling of 5645431540 in words is "five billion, six hundred forty-five million, four hundred thirty-one thousand, five hundred forty".