63814136643 has 12 divisors (see below), whose sum is σ = 92181220560. Its totient is φ = 42540336816.

The previous prime is 63814136641. The next prime is 63814136657. The reversal of 63814136643 is 34663141836.

63814136643 is a `hidden beast` number, since 63 + 81 + 413 + 66 + 43 = 666.

It is not a de Polignac number, because 63814136643 - 2¹ = 63814136641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63814136641) 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, 26823 + ... + 358256.

It is an arithmetic number, because the mean of its divisors is an integer number (7681768380).

Almost surely, 2^63814136643 is an apocalyptic number.

63814136643 is a deficient number, since it is larger than the sum of its proper divisors (28367083917).

63814136643 is a wasteful number, since it uses less digits than its factorization.

63814136643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403498 (or 403495 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The spelling of 63814136643 in words is "sixty-three billion, eight hundred fourteen million, one hundred thirty-six thousand, six hundred forty-three".