20628003253 has 16 divisors (see below), whose sum is σ = 25069968000. Its totient is φ = 16713305280.

The previous prime is 20628003233. The next prime is 20628003323. The reversal of 20628003253 is 35230082602.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20628003253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20628003223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2482953 + ... + 2491246.

It is an arithmetic number, because the mean of its divisors is an integer number (1566873000).

Almost surely, 2^20628003253 is an apocalyptic number.

It is an amenable number.

20628003253 is a deficient number, since it is larger than the sum of its proper divisors (4441964747).

20628003253 is a wasteful number, since it uses less digits than its factorization.

20628003253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4974252.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 20628003253 its reverse (35230082602), we get a palindrome (55858085855).

The spelling of 20628003253 in words is "twenty billion, six hundred twenty-eight million, three thousand, two hundred fifty-three".