3781747482021 has 48 divisors (see below), whose sum is σ = 5846150128000. Its totient is φ = 2348568328320.

The previous prime is 3781747482011. The next prime is 3781747482047. The reversal of 3781747482021 is 1202847471873.

It is a happy number.

3781747482021 is a `hidden beast` number, since 3 + 78 + 1 + 7 + 474 + 82 + 0 + 21 = 666.

3781747482021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3781747482021 - 2¹⁷ = 3781747350949 is a prime.

It is a super-2 number, since 2×3781747482021² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781747482011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33625560 + ... + 33737838.

Almost surely, 2^{3781747482021} is an apocalyptic number.

It is an amenable number.

3781747482021 is a deficient number, since it is larger than the sum of its proper divisors (2064402645979).

3781747482021 is a wasteful number, since it uses less digits than its factorization.

3781747482021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115594 (or 115591 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 54.

The spelling of 3781747482021 in words is "three trillion, seven hundred eighty-one billion, seven hundred forty-seven million, four hundred eighty-two thousand, twenty-one".