63147804381 has 24 divisors (see below), whose sum is σ = 92600520480. Its totient is φ = 41458719456.

The previous prime is 63147804373. The next prime is 63147804457. The reversal of 63147804381 is 18340874136.

63147804381 is a `hidden beast` number, since 63 + 1 + 478 + 0 + 43 + 81 = 666.

It is not a de Polignac number, because 63147804381 - 2³ = 63147804373 is a prime.

It is a super-2 number, since 2×63147804381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63147804301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2537706 + ... + 2562468.

It is an arithmetic number, because the mean of its divisors is an integer number (3858355020).

Almost surely, 2^63147804381 is an apocalyptic number.

It is an amenable number.

63147804381 is a deficient number, since it is larger than the sum of its proper divisors (29452716099).

63147804381 is a wasteful number, since it uses less digits than its factorization.

63147804381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29065 (or 29062 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 63147804381 in words is "sixty-three billion, one hundred forty-seven million, eight hundred four thousand, three hundred eighty-one".