20079847782 has 16 divisors (see below), whose sum is σ = 44621884080. Its totient is φ = 6693282576.

The previous prime is 20079847693. The next prime is 20079847787. The reversal of 20079847782 is 28774897002.

20079847782 is a `hidden beast` number, since 2 + 0 + 0 + 7 + 98 + 477 + 82 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 371849033 = 20079847782 / (2 + 0 + 0 + 7 + 9 + 8 + 4 + 7 + 7 + 8 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20079847787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185924463 + ... + 185924570.

It is an arithmetic number, because the mean of its divisors is an integer number (2788867755).

Almost surely, 2^20079847782 is an apocalyptic number.

20079847782 is an abundant number, since it is smaller than the sum of its proper divisors (24542036298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20079847782 is a wasteful number, since it uses less digits than its factorization.

20079847782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371849044 (or 371849038 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 20079847782 in words is "twenty billion, seventy-nine million, eight hundred forty-seven thousand, seven hundred eighty-two".