20464321027 has 8 divisors (see below), whose sum is σ = 20536966800. Its totient is φ = 20391756000.

The previous prime is 20464321019. The next prime is 20464321043. The reversal of 20464321027 is 72012346402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20464321027 - 2³ = 20464321019 is a prime.

It is a super-2 number, since 2×20464321027² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20464321027.

It is not an unprimeable number, because it can be changed into a prime (20464321057) 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, 512277 + ... + 550777.

It is an arithmetic number, because the mean of its divisors is an integer number (2567120850).

Almost surely, 2^20464321027 is an apocalyptic number.

20464321027 is a deficient number, since it is larger than the sum of its proper divisors (72645773).

20464321027 is a wasteful number, since it uses less digits than its factorization.

20464321027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40373.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 20464321027 its reverse (72012346402), we get a palindrome (92476667429).

The spelling of 20464321027 in words is "twenty billion, four hundred sixty-four million, three hundred twenty-one thousand, twenty-seven".