1375706663365 has 4 divisors (see below), whose sum is σ = 1650847996044. Its totient is φ = 1100565330688.

The previous prime is 1375706663339. The next prime is 1375706663371. The reversal of 1375706663365 is 5633666075731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 695771188641 + 679935474724 = 834129^2 + 824582^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1375706663365 is a prime.

It is a super-2 number, since 2×1375706663365² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137570666332 + ... + 137570666341.

It is an arithmetic number, because the mean of its divisors is an integer number (412711999011).

Almost surely, 2^{1375706663365} is an apocalyptic number.

It is an amenable number.

1375706663365 is a deficient number, since it is larger than the sum of its proper divisors (275141332679).

1375706663365 is an equidigital number, since it uses as much as digits as its factorization.

1375706663365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275141332678.

The product of its (nonzero) digits is 42865200, while the sum is 58.

The spelling of 1375706663365 in words is "one trillion, three hundred seventy-five billion, seven hundred six million, six hundred sixty-three thousand, three hundred sixty-five".