20784527387 has 8 divisors (see below), whose sum is σ = 22429305696. Its totient is φ = 19146316032.

The previous prime is 20784527381. The next prime is 20784527399. The reversal of 20784527387 is 78372548702.

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

It is a cyclic number.

It is not a de Polignac number, because 20784527387 - 2¹⁰ = 20784526363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20784527381) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1635158 + ... + 1647819.

It is an arithmetic number, because the mean of its divisors is an integer number (2803663212).

Almost surely, 2^20784527387 is an apocalyptic number.

20784527387 is a deficient number, since it is larger than the sum of its proper divisors (1644778309).

20784527387 is a wasteful number, since it uses less digits than its factorization.

20784527387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283477.

The product of its (nonzero) digits is 5268480, while the sum is 53.

The spelling of 20784527387 in words is "twenty billion, seven hundred eighty-four million, five hundred twenty-seven thousand, three hundred eighty-seven".