20355103260253 has 16 divisors (see below), whose sum is σ = 21661793409600. Its totient is φ = 19060792148736.

The previous prime is 20355103260251. The next prime is 20355103260277. The reversal of 20355103260253 is 35206230155302.

It is a cyclic number.

It is not a de Polignac number, because 20355103260253 - 2¹ = 20355103260251 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 (20355103260251) 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, 792603 + ... + 6429496.

It is an arithmetic number, because the mean of its divisors is an integer number (1353862088100).

Almost surely, 2^{20355103260253} is an apocalyptic number.

It is an amenable number.

20355103260253 is a deficient number, since it is larger than the sum of its proper divisors (1306690149347).

20355103260253 is a wasteful number, since it uses less digits than its factorization.

20355103260253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7222956.

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 20355103260253 in words is "twenty trillion, three hundred fifty-five billion, one hundred three million, two hundred sixty thousand, two hundred fifty-three".