203043155243455 has 8 divisors (see below), whose sum is σ = 243731908568304. Its totient is φ = 162381109344000.

The previous prime is 203043155243443. The next prime is 203043155243483. The reversal of 203043155243455 is 554342551340302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203043155243455 - 2⁹ = 203043155242943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6676839621 + ... + 6676870030.

It is an arithmetic number, because the mean of its divisors is an integer number (30466488571038).

Almost surely, 2^{203043155243455} is an apocalyptic number.

203043155243455 is a deficient number, since it is larger than the sum of its proper divisors (40688753324849).

203043155243455 is a wasteful number, since it uses less digits than its factorization.

203043155243455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13353712697.

The product of its (nonzero) digits is 4320000, while the sum is 46.

The spelling of 203043155243455 in words is "two hundred three trillion, forty-three billion, one hundred fifty-five million, two hundred forty-three thousand, four hundred fifty-five".