203754423253 has 4 divisors (see below), whose sum is σ = 215739977580. Its totient is φ = 191768868928.

The previous prime is 203754423217. The next prime is 203754423263. The reversal of 203754423253 is 352324457302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 174128440369 + 29625982884 = 417287^2 + 172122^2 .

It is a cyclic number.

It is not a de Polignac number, because 203754423253 - 2¹³ = 203754415061 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 (203754423203) 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, 5992777138 + ... + 5992777171.

It is an arithmetic number, because the mean of its divisors is an integer number (53934994395).

Almost surely, 2^203754423253 is an apocalyptic number.

It is an amenable number.

203754423253 is a deficient number, since it is larger than the sum of its proper divisors (11985554327).

203754423253 is a wasteful number, since it uses less digits than its factorization.

203754423253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11985554326.

The product of its (nonzero) digits is 604800, while the sum is 40.

The spelling of 203754423253 in words is "two hundred three billion, seven hundred fifty-four million, four hundred twenty-three thousand, two hundred fifty-three".