1205206853745 has 32 divisors (see below), whose sum is σ = 1947262636800. Its totient is φ = 636527778432.

The previous prime is 1205206853713. The next prime is 1205206853759. The reversal of 1205206853745 is 5473586025021.

It is not a de Polignac number, because 1205206853745 - 2⁵ = 1205206853713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1205206853694 and 1205206853703.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16354141 + ... + 16427669.

It is an arithmetic number, because the mean of its divisors is an integer number (60851957400).

Almost surely, 2^{1205206853745} is an apocalyptic number.

1205206853745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1205206853745 is a deficient number, since it is larger than the sum of its proper divisors (742055783055).

1205206853745 is an frugal number, since it uses more digits than its factorization.

1205206853745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73846 (or 73640 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 48.

The spelling of 1205206853745 in words is "one trillion, two hundred five billion, two hundred six million, eight hundred fifty-three thousand, seven hundred forty-five".