20769776214 has 32 divisors (see below), whose sum is σ = 47981517696. Its totient is φ = 5923643520.

The previous prime is 20769776213. The next prime is 20769776219. The reversal of 20769776214 is 41267796702.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20769776213) 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 15 ways as a sum of consecutive naturals, for example, 9254572 + ... + 9256815.

It is an arithmetic number, because the mean of its divisors is an integer number (1499422428).

Almost surely, 2^20769776214 is an apocalyptic number.

20769776214 is an abundant number, since it is smaller than the sum of its proper divisors (27211741482).

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

20769776214 is a wasteful number, since it uses less digits than its factorization.

20769776214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18511420.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 20769776214 in words is "twenty billion, seven hundred sixty-nine million, seven hundred seventy-six thousand, two hundred fourteen".