1375656517874 has 4 divisors (see below), whose sum is σ = 2063484776814. Its totient is φ = 687828258936.

The previous prime is 1375656517861. The next prime is 1375656517889. The reversal of 1375656517874 is 4787156565731.

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

It can be written as a sum of positive squares in only one way, i.e., 882632065225 + 493024452649 = 939485^2 + 702157^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1375656517874.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343914129467 + ... + 343914129470.

Almost surely, 2^{1375656517874} is an apocalyptic number.

1375656517874 is a deficient number, since it is larger than the sum of its proper divisors (687828258940).

1375656517874 is an equidigital number, since it uses as much as digits as its factorization.

1375656517874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687828258939.

The product of its digits is 148176000, while the sum is 65.

The spelling of 1375656517874 in words is "one trillion, three hundred seventy-five billion, six hundred fifty-six million, five hundred seventeen thousand, eight hundred seventy-four".