3981401443611 has 12 divisors (see below), whose sum is σ = 5873273052192. Its totient is φ = 2597793849456.

The previous prime is 3981401443571. The next prime is 3981401443673. The reversal of 3981401443611 is 1163441041893.

3981401443611 is a `hidden beast` number, since 3 + 9 + 8 + 14 + 0 + 14 + 4 + 3 + 611 = 666.

It is not a de Polignac number, because 3981401443611 - 2²¹ = 3981399346459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3981401443511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4706147856 + ... + 4706148701.

It is an arithmetic number, because the mean of its divisors is an integer number (489439421016).

Almost surely, 2^{3981401443611} is an apocalyptic number.

3981401443611 is a deficient number, since it is larger than the sum of its proper divisors (1891871608581).

3981401443611 is a wasteful number, since it uses less digits than its factorization.

3981401443611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9412296610 (or 9412296607 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 3981401443611 in words is "three trillion, nine hundred eighty-one billion, four hundred one million, four hundred forty-three thousand, six hundred eleven".