13958078978 has 8 divisors (see below), whose sum is σ = 20937725760. Its totient is φ = 6978837060.

The previous prime is 13958078947. The next prime is 13958078983. The reversal of 13958078978 is 87987085931.

It is a happy number.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8963 + ... + 167321.

It is an arithmetic number, because the mean of its divisors is an integer number (2617215720).

Almost surely, 2^13958078978 is an apocalyptic number.

13958078978 is a deficient number, since it is larger than the sum of its proper divisors (6979646782).

13958078978 is a wasteful number, since it uses less digits than its factorization.

13958078978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202432.

The product of its (nonzero) digits is 30481920, while the sum is 65.

The spelling of 13958078978 in words is "thirteen billion, nine hundred fifty-eight million, seventy-eight thousand, nine hundred seventy-eight".