63381981411 has 32 divisors (see below), whose sum is σ = 107518763520. Its totient is φ = 36148967712.

The previous prime is 63381981409. The next prime is 63381981413. The reversal of 63381981411 is 11418918336.

63381981411 is a `hidden beast` number, since 633 + 8 + 1 + 9 + 8 + 1 + 4 + 1 + 1 = 666.

63381981411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (63381981409) and next prime (63381981413).

It is not a de Polignac number, because 63381981411 - 2¹ = 63381981409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63381981413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221760 + ... + 419453.

It is an arithmetic number, because the mean of its divisors is an integer number (3359961360).

Almost surely, 2^63381981411 is an apocalyptic number.

63381981411 is a deficient number, since it is larger than the sum of its proper divisors (44136782109).

63381981411 is a wasteful number, since it uses less digits than its factorization.

63381981411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641752 (or 641746 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The spelling of 63381981411 in words is "sixty-three billion, three hundred eighty-one million, nine hundred eighty-one thousand, four hundred eleven".