20784678314 has 8 divisors (see below), whose sum is σ = 32182727808. Its totient is φ = 10057102380.

The previous prime is 20784678251. The next prime is 20784678361. The reversal of 20784678314 is 41387648702.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167618312 + ... + 167618435.

It is an arithmetic number, because the mean of its divisors is an integer number (4022840976).

Almost surely, 2^20784678314 is an apocalyptic number.

20784678314 is a deficient number, since it is larger than the sum of its proper divisors (11398049494).

20784678314 is a wasteful number, since it uses less digits than its factorization.

20784678314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335236780.

The product of its (nonzero) digits is 1806336, while the sum is 50.

The spelling of 20784678314 in words is "twenty billion, seven hundred eighty-four million, six hundred seventy-eight thousand, three hundred fourteen".