63827664541 has 4 divisors (see below), whose sum is σ = 63862910784. Its totient is φ = 63792418300.

The previous prime is 63827664533. The next prime is 63827664569. The reversal of 63827664541 is 14546672836.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63827664541 - 2³ = 63827664533 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 (63827662541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17620405 + ... + 17624026.

It is an arithmetic number, because the mean of its divisors is an integer number (15965727696).

Almost surely, 2^63827664541 is an apocalyptic number.

It is an amenable number.

63827664541 is a deficient number, since it is larger than the sum of its proper divisors (35246243).

63827664541 is a wasteful number, since it uses less digits than its factorization.

63827664541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35246242.

The product of its digits is 5806080, while the sum is 52.

The spelling of 63827664541 in words is "sixty-three billion, eight hundred twenty-seven million, six hundred sixty-four thousand, five hundred forty-one".