20402301133 has 12 divisors (see below), whose sum is σ = 21677597788. Its totient is φ = 19195292160.

The previous prime is 20402301113. The next prime is 20402301151. The reversal of 20402301133 is 33110320402.

It can be written as a sum of positive squares in 2 ways, for example, as 3269323684 + 17132977449 = 57178^2 + 130893^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20402301133 is a prime.

It is a super-2 number, since 2×20402301133² (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 20402301133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402301113) 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 11 ways as a sum of consecutive naturals, for example, 283860 + ... + 348397.

Almost surely, 2^20402301133 is an apocalyptic number.

20402301133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20402301133 is a deficient number, since it is larger than the sum of its proper divisors (1275296655).

20402301133 is an equidigital number, since it uses as much as digits as its factorization.

20402301133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632364 (or 632341 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20402301133 its reverse (33110320402), we get a palindrome (53512621535).

The spelling of 20402301133 in words is "twenty billion, four hundred two million, three hundred one thousand, one hundred thirty-three".