20401433213 has 8 divisors (see below), whose sum is σ = 24119921280. Its totient is φ = 16883944560.

The previous prime is 20401433203. The next prime is 20401433237. The reversal of 20401433213 is 31233410402.

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

It is not a de Polignac number, because 20401433213 - 2⁶ = 20401433149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401433203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50249633 + ... + 50250038.

It is an arithmetic number, because the mean of its divisors is an integer number (3014990160).

Almost surely, 2^20401433213 is an apocalyptic number.

It is an amenable number.

20401433213 is a deficient number, since it is larger than the sum of its proper divisors (3718488067).

20401433213 is a wasteful number, since it uses less digits than its factorization.

20401433213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100499707.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20401433213 its reverse (31233410402), we get a palindrome (51634843615).

The spelling of 20401433213 in words is "twenty billion, four hundred one million, four hundred thirty-three thousand, two hundred thirteen".