3581145662320 has 80 divisors (see below), whose sum is σ = 8565385315968. Its totient is φ = 1391746795520.

The previous prime is 3581145662267. The next prime is 3581145662333. The reversal of 3581145662320 is 232665411853.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2960911 + ... + 3991150.

Almost surely, 2^{3581145662320} is an apocalyptic number.

It is an amenable number.

3581145662320 is an abundant number, since it is smaller than the sum of its proper divisors (4984239653648).

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

3581145662320 is a wasteful number, since it uses less digits than its factorization.

3581145662320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6952258 (or 6952252 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 3581145662320 in words is "three trillion, five hundred eighty-one billion, one hundred forty-five million, six hundred sixty-two thousand, three hundred twenty".