1200538308065 has 8 divisors (see below), whose sum is σ = 1441964042088. Its totient is φ = 959551931520.

The previous prime is 1200538308049. The next prime is 1200538308113. The reversal of 1200538308065 is 5608038350021.

It can be written as a sum of positive squares in 4 ways, for example, as 99356713681 + 1101181594384 = 315209^2 + 1049372^2 .

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

It is not a de Polignac number, because 1200538308065 - 2⁴ = 1200538308049 is a prime.

It is a Duffinian number.

It is a Curzon 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, 109833356 + ... + 109844285.

It is an arithmetic number, because the mean of its divisors is an integer number (180245505261).

Almost surely, 2^{1200538308065} is an apocalyptic number.

It is an amenable number.

1200538308065 is a deficient number, since it is larger than the sum of its proper divisors (241425734023).

1200538308065 is a wasteful number, since it uses less digits than its factorization.

1200538308065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219678739.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 1200538308065 in words is "one trillion, two hundred billion, five hundred thirty-eight million, three hundred eight thousand, sixty-five".