1375444637075 has 6 divisors (see below), whose sum is σ = 1705551350004. Its totient is φ = 1100355709640.

The previous prime is 1375444637059. The next prime is 1375444637087. The reversal of 1375444637075 is 5707364445731.

It is not a de Polignac number, because 1375444637075 - 2⁴ = 1375444637059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1375444637075.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27508892717 + ... + 27508892766.

It is an arithmetic number, because the mean of its divisors is an integer number (284258558334).

Almost surely, 2^{1375444637075} is an apocalyptic number.

1375444637075 is a deficient number, since it is larger than the sum of its proper divisors (330106712929).

1375444637075 is an equidigital number, since it uses as much as digits as its factorization.

1375444637075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55017785493 (or 55017785488 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 56.

The spelling of 1375444637075 in words is "one trillion, three hundred seventy-five billion, four hundred forty-four million, six hundred thirty-seven thousand, seventy-five".