1078203173205 has 16 divisors (see below), whose sum is σ = 1800130515840. Its totient is φ = 550039879488.

The previous prime is 1078203173161. The next prime is 1078203173221. The reversal of 1078203173205 is 5023713028701.

It is not a de Polignac number, because 1078203173205 - 2¹⁰ = 1078203172181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1562612950 + ... + 1562613639.

It is an arithmetic number, because the mean of its divisors is an integer number (112508157240).

Almost surely, 2^{1078203173205} is an apocalyptic number.

1078203173205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1078203173205 is a deficient number, since it is larger than the sum of its proper divisors (721927342635).

1078203173205 is a wasteful number, since it uses less digits than its factorization.

1078203173205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125226620.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 1078203173205 in words is "one trillion, seventy-eight billion, two hundred three million, one hundred seventy-three thousand, two hundred five".