1203553808356 has 9 divisors (see below), whose sum is σ = 2106223004361. Its totient is φ = 601775807112.

The previous prime is 1203553808341. The next prime is 1203553808357. The reversal of 1203553808356 is 6538083553021.

The square root of 1203553808356 is 1097066.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 22019592100 + 1181534216256 = 148390^2 + 1086984^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203553808357) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1919866 + ... + 2468398.

Almost surely, 2^{1203553808356} is an apocalyptic number.

1203553808356 is the 1097066-th square number.

It is an amenable number.

1203553808356 is a deficient number, since it is larger than the sum of its proper divisors (902669196005).

1203553808356 is an frugal number, since it uses more digits than its factorization.

1203553808356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097070 (or 548535 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 49.

Multiplying 1203553808356 by its sum of digits (49), we get a square (58974136609444 = 7679462²).

The spelling of 1203553808356 in words is "one trillion, two hundred three billion, five hundred fifty-three million, eight hundred eight thousand, three hundred fifty-six".