1373203071505 has 16 divisors (see below), whose sum is σ = 1745868373200. Its totient is φ = 1033293606912.

The previous prime is 1373203071431. The next prime is 1373203071509. The reversal of 1373203071505 is 5051703023731.

It can be written as a sum of positive squares in 8 ways, for example, as 26052865281 + 1347150206224 = 161409^2 + 1160668^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373203071505 - 2¹³ = 1373203063313 is a prime.

It is a super-3 number, since 3×1373203071505³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1373203071509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4922280 + ... + 5193769.

It is an arithmetic number, because the mean of its divisors is an integer number (109116773325).

Almost surely, 2^{1373203071505} is an apocalyptic number.

It is an amenable number.

1373203071505 is a deficient number, since it is larger than the sum of its proper divisors (372665301695).

1373203071505 is a wasteful number, since it uses less digits than its factorization.

1373203071505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10117668.

The product of its (nonzero) digits is 66150, while the sum is 37.

The spelling of 1373203071505 in words is "one trillion, three hundred seventy-three billion, two hundred three million, seventy-one thousand, five hundred five".