20413133011 has 4 divisors (see below), whose sum is σ = 20438746272. Its totient is φ = 20387519752.

The previous prime is 20413132979. The next prime is 20413133021. The reversal of 20413133011 is 11033131402.

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

It is a cyclic number.

It is not a de Polignac number, because 20413133011 - 2⁵ = 20413132979 is a prime.

It is a super-2 number, since 2×20413133011² (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 20413133011.

It is not an unprimeable number, because it can be changed into a prime (20413133021) 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, 12805435 + ... + 12807028.

It is an arithmetic number, because the mean of its divisors is an integer number (5109686568).

Almost surely, 2^20413133011 is an apocalyptic number.

20413133011 is a deficient number, since it is larger than the sum of its proper divisors (25613261).

20413133011 is an equidigital number, since it uses as much as digits as its factorization.

20413133011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25613260.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20413133011 its reverse (11033131402), we get a palindrome (31446264413).

The spelling of 20413133011 in words is "twenty billion, four hundred thirteen million, one hundred thirty-three thousand, eleven".