1381497267265 has 8 divisors (see below), whose sum is σ = 1674210550248. Its totient is φ = 1094255260800.

The previous prime is 1381497267263. The next prime is 1381497267281. The reversal of 1381497267265 is 5627627941831.

It can be written as a sum of positive squares in 4 ways, for example, as 111828041649 + 1269669225616 = 334407^2 + 1126796^2 .

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

It is not a de Polignac number, because 1381497267265 - 2¹ = 1381497267263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381497267263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367818572 + ... + 1367819581.

It is an arithmetic number, because the mean of its divisors is an integer number (209276318781).

Almost surely, 2^{1381497267265} is an apocalyptic number.

It is an amenable number.

1381497267265 is a deficient number, since it is larger than the sum of its proper divisors (292713282983).

1381497267265 is a wasteful number, since it uses less digits than its factorization.

1381497267265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735638259.

The product of its digits is 30481920, while the sum is 61.

The spelling of 1381497267265 in words is "one trillion, three hundred eighty-one billion, four hundred ninety-seven million, two hundred sixty-seven thousand, two hundred sixty-five".