20636132575 has 6 divisors (see below), whose sum is σ = 25588804424. Its totient is φ = 16508906040.

The previous prime is 20636132551. The next prime is 20636132639. The reversal of 20636132575 is 57523163602.

It is not a de Polignac number, because 20636132575 - 2¹⁵ = 20636099807 is a prime.

It is a super-2 number, since 2×20636132575² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 412722627 + ... + 412722676.

Almost surely, 2^20636132575 is an apocalyptic number.

20636132575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20636132575 is a deficient number, since it is larger than the sum of its proper divisors (4952671849).

20636132575 is an equidigital number, since it uses as much as digits as its factorization.

20636132575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825445313 (or 825445308 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 20636132575 in words is "twenty billion, six hundred thirty-six million, one hundred thirty-two thousand, five hundred seventy-five".