20003517001253 has 4 divisors (see below), whose sum is σ = 20156215604448. Its totient is φ = 19850818398060.

The previous prime is 20003517001249. The next prime is 20003517001267. The reversal of 20003517001253 is 35210071530002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20003517001253 - 2² = 20003517001249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003517001243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76349301401 + ... + 76349301662.

It is an arithmetic number, because the mean of its divisors is an integer number (5039053901112).

Almost surely, 2^{20003517001253} is an apocalyptic number.

It is an amenable number.

20003517001253 is a deficient number, since it is larger than the sum of its proper divisors (152698603195).

20003517001253 is a wasteful number, since it uses less digits than its factorization.

20003517001253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152698603194.

The product of its (nonzero) digits is 6300, while the sum is 29.

Adding to 20003517001253 its reverse (35210071530002), we get a palindrome (55213588531255).

The spelling of 20003517001253 in words is "twenty trillion, three billion, five hundred seventeen million, one thousand, two hundred fifty-three".