1320406061365 has 16 divisors (see below), whose sum is σ = 1635967595520. Its totient is φ = 1022019960960.

The previous prime is 1320406061291. The next prime is 1320406061369. The reversal of 1320406061365 is 5631606040231.

It is not a de Polignac number, because 1320406061365 - 2¹³ = 1320406053173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320406061369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264825 + ... + 1646494.

It is an arithmetic number, because the mean of its divisors is an integer number (102247974720).

Almost surely, 2^{1320406061365} is an apocalyptic number.

It is an amenable number.

1320406061365 is a deficient number, since it is larger than the sum of its proper divisors (315561534155).

1320406061365 is a wasteful number, since it uses less digits than its factorization.

1320406061365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915812.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 1320406061365 in words is "one trillion, three hundred twenty billion, four hundred six million, sixty-one thousand, three hundred sixty-five".