20075966501 has 4 divisors (see below), whose sum is σ = 20144485452. Its totient is φ = 20007447552.

The previous prime is 20075966489. The next prime is 20075966531. The reversal of 20075966501 is 10566957002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13351802500 + 6724164001 = 115550^2 + 82001^2 .

It is a cyclic number.

It is not a de Polignac number, because 20075966501 - 2³⁴ = 2896097317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20075966531) 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 3 ways as a sum of consecutive naturals, for example, 34259036 + ... + 34259621.

It is an arithmetic number, because the mean of its divisors is an integer number (5036121363).

Almost surely, 2^20075966501 is an apocalyptic number.

It is an amenable number.

20075966501 is a deficient number, since it is larger than the sum of its proper divisors (68518951).

20075966501 is an equidigital number, since it uses as much as digits as its factorization.

20075966501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68518950.

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 20075966501 in words is "twenty billion, seventy-five million, nine hundred sixty-six thousand, five hundred one".