3781324985680 has 80 divisors (see below), whose sum is σ = 10007807209344. Its totient is φ = 1315243466240.

The previous prime is 3781324985677. The next prime is 3781324985701. The reversal of 3781324985680 is 865894231873.

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

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

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, 93391939 + ... + 93432418.

It is a 1-persistent number, because it is pandigital, but 2⋅3781324985680 = 7562649971360 is not.

Almost surely, 2^{3781324985680} is an apocalyptic number.

It is an amenable number.

3781324985680 is an abundant number, since it is smaller than the sum of its proper divisors (6226482223664).

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

3781324985680 is a wasteful number, since it uses less digits than its factorization.

3781324985680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186824404 (or 186824398 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 64.

The spelling of 3781324985680 in words is "three trillion, seven hundred eighty-one billion, three hundred twenty-four million, nine hundred eighty-five thousand, six hundred eighty".