20401333113 has 48 divisors (see below), whose sum is σ = 32367591360. Its totient is φ = 11393230464.

The previous prime is 20401333111. The next prime is 20401333153. The reversal of 20401333113 is 31133310402.

It is not a de Polignac number, because 20401333113 - 2¹ = 20401333111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 20401333113.

It is not an unprimeable number, because it can be changed into a prime (20401333111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1493631 + ... + 1507227.

It is an arithmetic number, because the mean of its divisors is an integer number (674324820).

Almost surely, 2^20401333113 is an apocalyptic number.

It is an amenable number.

20401333113 is a deficient number, since it is larger than the sum of its proper divisors (11966258247).

20401333113 is a wasteful number, since it uses less digits than its factorization.

20401333113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13846 (or 13839 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20401333113 its reverse (31133310402), we get a palindrome (51534643515).

The spelling of 20401333113 in words is "twenty billion, four hundred one million, three hundred thirty-three thousand, one hundred thirteen".