20384770678 has 8 divisors (see below), whose sum is σ = 30581120160. Its totient is φ = 10191063960.

The previous prime is 20384770667. The next prime is 20384770687. The reversal of 20384770678 is 87607748302.

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, 641293 + ... + 672328.

It is an arithmetic number, because the mean of its divisors is an integer number (3822640020).

Almost surely, 2^20384770678 is an apocalyptic number.

20384770678 is a deficient number, since it is larger than the sum of its proper divisors (10196349482).

20384770678 is a wasteful number, since it uses less digits than its factorization.

20384770678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321382.

The product of its (nonzero) digits is 3161088, while the sum is 52.

The spelling of 20384770678 in words is "twenty billion, three hundred eighty-four million, seven hundred seventy thousand, six hundred seventy-eight".