20784296678 has 8 divisors (see below), whose sum is σ = 31179868320. Its totient is φ = 10391007240.

The previous prime is 20784296651. The next prime is 20784296681. The reversal of 20784296678 is 87669248702.

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

It is a congruent 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, 547598 + ... + 584321.

It is an arithmetic number, because the mean of its divisors is an integer number (3897483540).

Almost surely, 2^20784296678 is an apocalyptic number.

20784296678 is a deficient number, since it is larger than the sum of its proper divisors (10395571642).

20784296678 is a wasteful number, since it uses less digits than its factorization.

20784296678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141102.

The product of its (nonzero) digits is 16257024, while the sum is 59.

The spelling of 20784296678 in words is "twenty billion, seven hundred eighty-four million, two hundred ninety-six thousand, six hundred seventy-eight".