63850994657787 has 4 divisors (see below), whose sum is σ = 85134659543720. Its totient is φ = 42567329771856.

The previous prime is 63850994657741. The next prime is 63850994657789. The reversal of 63850994657787 is 78775649905836.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 63850994657787 - 2⁸ = 63850994657531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63850994657789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10641832442962 + ... + 10641832442967.

It is an arithmetic number, because the mean of its divisors is an integer number (21283664885930).

Almost surely, 2^{63850994657787} is an apocalyptic number.

63850994657787 is a deficient number, since it is larger than the sum of its proper divisors (21283664885933).

63850994657787 is a wasteful number, since it uses less digits than its factorization.

63850994657787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21283664885932.

The product of its (nonzero) digits is 19203609600, while the sum is 84.

The spelling of 63850994657787 in words is "sixty-three trillion, eight hundred fifty billion, nine hundred ninety-four million, six hundred fifty-seven thousand, seven hundred eighty-seven".