5521815783672 has 32 divisors (see below), whose sum is σ = 13804883336400. Its totient is φ = 1840559410944.

The previous prime is 5521815783667. The next prime is 5521815783677. The reversal of 5521815783672 is 2763875181255.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5521815783667) and next prime (5521815783677).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5521815783677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1875133 + ... + 3815724.

Almost surely, 2^{5521815783672} is an apocalyptic number.

It is an amenable number.

5521815783672 is an abundant number, since it is smaller than the sum of its proper divisors (8283067552728).

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

5521815783672 is a wasteful number, since it uses less digits than its factorization.

5521815783672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5731295 (or 5731291 counting only the distinct ones).

The product of its digits is 28224000, while the sum is 60.

The spelling of 5521815783672 in words is "five trillion, five hundred twenty-one billion, eight hundred fifteen million, seven hundred eighty-three thousand, six hundred seventy-two".