49663415978 has 8 divisors (see below), whose sum is σ = 81267408000. Its totient is φ = 22574279980.

The previous prime is 49663415969. The next prime is 49663415999. The reversal of 49663415978 is 87951436694.

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

It is a self number, because there is not a number n which added to its sum of digits gives 49663415978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128713978 + ... + 1128714021.

It is an arithmetic number, because the mean of its divisors is an integer number (10158426000).

Almost surely, 2^49663415978 is an apocalyptic number.

49663415978 is a deficient number, since it is larger than the sum of its proper divisors (31603992022).

49663415978 is a wasteful number, since it uses less digits than its factorization.

49663415978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257428012.

The product of its digits is 39191040, while the sum is 62.

The spelling of 49663415978 in words is "forty-nine billion, six hundred sixty-three million, four hundred fifteen thousand, nine hundred seventy-eight".