20340040133 has 32 divisors (see below), whose sum is σ = 25712640000. Its totient is φ = 15677418240.

The previous prime is 20340040129. The next prime is 20340040139. The reversal of 20340040133 is 33104004302.

It is not a de Polignac number, because 20340040133 - 2² = 20340040129 is a prime.

It is a super-2 number, since 2×20340040133² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340040139) 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 31 ways as a sum of consecutive naturals, for example, 2708618 + ... + 2716116.

It is an arithmetic number, because the mean of its divisors is an integer number (803520000).

Almost surely, 2^20340040133 is an apocalyptic number.

20340040133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20340040133 is a deficient number, since it is larger than the sum of its proper divisors (5372599867).

20340040133 is a wasteful number, since it uses less digits than its factorization.

20340040133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8537.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20340040133 its reverse (33104004302), we get a palindrome (53444044435).

The spelling of 20340040133 in words is "twenty billion, three hundred forty million, forty thousand, one hundred thirty-three".