20356440976 has 45 divisors (see below), whose sum is σ = 40258627059. Its totient is φ = 9971340288.

The previous prime is 20356440971. The next prime is 20356441009. The reversal of 20356440976 is 67904465302.

The square root of 20356440976 is 142676.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 55890576 + 20300550400 = 7476^2 + 142480^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20356440971) 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 8 ways as a sum of consecutive naturals, for example, 30246976 + ... + 30247648.

Almost surely, 2^20356440976 is an apocalyptic number.

20356440976 is the 142676-th square number.

It is an amenable number.

20356440976 is a deficient number, since it is larger than the sum of its proper divisors (19902186083).

20356440976 is an frugal number, since it uses more digits than its factorization.

20356440976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 20356440976 in words is "twenty billion, three hundred fifty-six million, four hundred forty thousand, nine hundred seventy-six".