63810496978 has 8 divisors (see below), whose sum is σ = 97941693168. Its totient is φ = 31163265924.

The previous prime is 63810496951. The next prime is 63810496979. The reversal of 63810496978 is 87969401836.

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

It is not an unprimeable number, because it can be changed into a prime (63810496979) 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, 370991176 + ... + 370991347.

It is an arithmetic number, because the mean of its divisors is an integer number (12242711646).

Almost surely, 2^63810496978 is an apocalyptic number.

63810496978 is a deficient number, since it is larger than the sum of its proper divisors (34131196190).

63810496978 is a wasteful number, since it uses less digits than its factorization.

63810496978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741982568.

The product of its (nonzero) digits is 15676416, while the sum is 61.

The spelling of 63810496978 in words is "sixty-three billion, eight hundred ten million, four hundred ninety-six thousand, nine hundred seventy-eight".