20575946320 has 40 divisors (see below), whose sum is σ = 47882888424. Its totient is φ = 8222840832.

The previous prime is 20575946291. The next prime is 20575946323. The reversal of 20575946320 is 2364957502.

It can be written as a sum of positive squares in 4 ways, for example, as 43349056 + 20532597264 = 6584^2 + 143292^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20575946323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29469 + ... + 204988.

Almost surely, 2^20575946320 is an apocalyptic number.

20575946320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20575946320 is an abundant number, since it is smaller than the sum of its proper divisors (27306942104).

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

20575946320 is a wasteful number, since it uses less digits than its factorization.

20575946320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235567 (or 235561 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 20575946320 in words is "twenty billion, five hundred seventy-five million, nine hundred forty-six thousand, three hundred twenty".