3581837662648 has 64 divisors (see below), whose sum is σ = 7928166942720. Its totient is φ = 1484578281600.

The previous prime is 3581837662619. The next prime is 3581837662709. The reversal of 3581837662648 is 8462667381853.

3581837662648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3581837662648² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1966558 + ... + 3321298.

It is an arithmetic number, because the mean of its divisors is an integer number (123877608480).

Almost surely, 2^{3581837662648} 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 3581837662648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3964083471360).

3581837662648 is an abundant number, since it is smaller than the sum of its proper divisors (4346329280072).

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

3581837662648 is a wasteful number, since it uses less digits than its factorization.

3581837662648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356308 (or 1356304 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 67.

The spelling of 3581837662648 in words is "three trillion, five hundred eighty-one billion, eight hundred thirty-seven million, six hundred sixty-two thousand, six hundred forty-eight".