63381526893 has 8 divisors (see below), whose sum is σ = 93898558400. Its totient is φ = 42254351244.

The previous prime is 63381526889. The next prime is 63381526909. The reversal of 63381526893 is 39862518336.

It is a happy number.

63381526893 is a `hidden beast` number, since 6 + 3 + 38 + 1 + 526 + 89 + 3 = 666.

It is not a de Polignac number, because 63381526893 - 2² = 63381526889 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63381526393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1173731953 + ... + 1173732006.

It is an arithmetic number, because the mean of its divisors is an integer number (11737319800).

Almost surely, 2^63381526893 is an apocalyptic number.

It is an amenable number.

63381526893 is a deficient number, since it is larger than the sum of its proper divisors (30517031507).

63381526893 is a wasteful number, since it uses less digits than its factorization.

63381526893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347463968 (or 2347463962 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 63381526893 in words is "sixty-three billion, three hundred eighty-one million, five hundred twenty-six thousand, eight hundred ninety-three".