65563778013 has 8 divisors (see below), whose sum is σ = 88851458976. Its totient is φ = 42992641200.

The previous prime is 65563777987. The next prime is 65563778029. The reversal of 65563778013 is 31087736556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65563778013 - 2⁸ = 65563777757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65563778083) 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, 179135823 + ... + 179136188.

It is an arithmetic number, because the mean of its divisors is an integer number (11106432372).

Almost surely, 2^65563778013 is an apocalyptic number.

It is an amenable number.

65563778013 is a deficient number, since it is larger than the sum of its proper divisors (23287680963).

65563778013 is a wasteful number, since it uses less digits than its factorization.

65563778013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358272075.

The product of its (nonzero) digits is 3175200, while the sum is 51.

The spelling of 65563778013 in words is "sixty-five billion, five hundred sixty-three million, seven hundred seventy-eight thousand, thirteen".