5393687640 has 128 divisors (see below), whose sum is σ = 17669733120. Its totient is φ = 1306252800.

The previous prime is 5393687627. The next prime is 5393687647. The reversal of 5393687640 is 467863935.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5393687647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2296947 + ... + 2299293.

It is an arithmetic number, because the mean of its divisors is an integer number (138044790).

Almost surely, 2^5393687640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5393687640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8834866560).

5393687640 is an abundant number, since it is smaller than the sum of its proper divisors (12276045480).

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

5393687640 is a wasteful number, since it uses less digits than its factorization.

5393687640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113 (or 4109 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The square root of 5393687640 is about 73441.7295547974. The cubic root of 5393687640 is about 1753.7267670290.

The spelling of 5393687640 in words is "five billion, three hundred ninety-three million, six hundred eighty-seven thousand, six hundred forty".