1375318050644 has 6 divisors (see below), whose sum is σ = 2406806588634. Its totient is φ = 687659025320.

The previous prime is 1375318050641. The next prime is 1375318050661. The reversal of 1375318050644 is 4460508135731.

It can be written as a sum of positive squares in only one way, i.e., 1244924840644 + 130393210000 = 1115762^2 + 361100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375318050641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171914756327 + ... + 171914756334.

It is an arithmetic number, because the mean of its divisors is an integer number (401134431439).

Almost surely, 2^{1375318050644} is an apocalyptic number.

It is an amenable number.

1375318050644 is a deficient number, since it is larger than the sum of its proper divisors (1031488537990).

1375318050644 is a wasteful number, since it uses less digits than its factorization.

1375318050644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343829512665 (or 343829512663 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 1375318050644 in words is "one trillion, three hundred seventy-five billion, three hundred eighteen million, fifty thousand, six hundred forty-four".