63894046879 has 4 divisors (see below), whose sum is σ = 68808973576. Its totient is φ = 58979120184.

The previous prime is 63894046877. The next prime is 63894046891. The reversal of 63894046879 is 97864049836.

63894046879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 63894046879 - 2¹ = 63894046877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63894046879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63894046877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2457463329 + ... + 2457463354.

It is an arithmetic number, because the mean of its divisors is an integer number (17202243394).

Almost surely, 2^63894046879 is an apocalyptic number.

63894046879 is a deficient number, since it is larger than the sum of its proper divisors (4914926697).

63894046879 is a wasteful number, since it uses less digits than its factorization.

63894046879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914926696.

The product of its (nonzero) digits is 62705664, while the sum is 64.

The spelling of 63894046879 in words is "sixty-three billion, eight hundred ninety-four million, forty-six thousand, eight hundred seventy-nine".