63381571902 has 96 divisors (see below), whose sum is σ = 155663464320. Its totient is φ = 19168967520.

The previous prime is 63381571889. The next prime is 63381571949. The reversal of 63381571902 is 20917518336.

63381571902 is a `hidden beast` number, since 633 + 8 + 1 + 5 + 7 + 1 + 9 + 0 + 2 = 666.

63381571902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2784624 + ... + 2807292.

It is an arithmetic number, because the mean of its divisors is an integer number (1621494420).

Almost surely, 2^63381571902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63381571902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77831732160).

63381571902 is an abundant number, since it is smaller than the sum of its proper divisors (92281892418).

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

63381571902 is a wasteful number, since it uses less digits than its factorization.

63381571902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23220 (or 23208 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 63381571902 in words is "sixty-three billion, three hundred eighty-one million, five hundred seventy-one thousand, nine hundred two".