5591500638 has 16 divisors (see below), whose sum is σ = 11183769360. Its totient is φ = 1863705536.

The previous prime is 5591500619. The next prime is 5591500667. The reversal of 5591500638 is 8360051955.

It is a self number, because there is not a number n which added to its sum of digits gives 5591500638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113578 + ... + 155186.

It is an arithmetic number, because the mean of its divisors is an integer number (698985585).

Almost surely, 2^5591500638 is an apocalyptic number.

5591500638 is an abundant number, since it is smaller than the sum of its proper divisors (5592268722).

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

5591500638 is a wasteful number, since it uses less digits than its factorization.

5591500638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64011.

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 5591500638 is about 74776.3374203364. The cubic root of 5591500638 is about 1774.9091417355.

The spelling of 5591500638 in words is "five billion, five hundred ninety-one million, five hundred thousand, six hundred thirty-eight".