1309078745675 has 48 divisors (see below), whose sum is σ = 1668688464960. Its totient is φ = 1018347133440.

The previous prime is 1309078745659. The next prime is 1309078745677. The reversal of 1309078745675 is 5765478709031.

It is a happy number.

It is not a de Polignac number, because 1309078745675 - 2⁴ = 1309078745659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1309078745677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68640041 + ... + 68659109.

It is an arithmetic number, because the mean of its divisors is an integer number (34764343020).

Almost surely, 2^{1309078745675} is an apocalyptic number.

1309078745675 is a deficient number, since it is larger than the sum of its proper divisors (359609719285).

1309078745675 is a wasteful number, since it uses less digits than its factorization.

1309078745675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19592 (or 19587 counting only the distinct ones).

The product of its (nonzero) digits is 44452800, while the sum is 62.

The spelling of 1309078745675 in words is "one trillion, three hundred nine billion, seventy-eight million, seven hundred forty-five thousand, six hundred seventy-five".