20976982719 has 32 divisors (see below), whose sum is σ = 34905047040. Its totient is φ = 10886440800.

The previous prime is 20976982717. The next prime is 20976982727. The reversal of 20976982719 is 91728967902.

It is not a de Polignac number, because 20976982719 - 2¹ = 20976982717 is a prime.

It is a super-2 number, since 2×20976982719² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20976982711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194122 + ... + 282200.

It is an arithmetic number, because the mean of its divisors is an integer number (1090782720).

Almost surely, 2^20976982719 is an apocalyptic number.

20976982719 is a deficient number, since it is larger than the sum of its proper divisors (13928064321).

20976982719 is a wasteful number, since it uses less digits than its factorization.

20976982719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89131.

The product of its (nonzero) digits is 6858432, while the sum is 60.

The spelling of 20976982719 in words is "twenty billion, nine hundred seventy-six million, nine hundred eighty-two thousand, seven hundred nineteen".