1356318880345 has 36 divisors (see below), whose sum is σ = 1937196794988. Its totient is φ = 910535683200.

The previous prime is 1356318880339. The next prime is 1356318880379. The reversal of 1356318880345 is 5430888136531.

It can be written as a sum of positive squares in 6 ways, for example, as 503437078089 + 852881802256 = 709533^2 + 923516^2 .

It is not a de Polignac number, because 1356318880345 - 2¹⁷ = 1356318749273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6530446 + ... + 6734935.

It is an arithmetic number, because the mean of its divisors is an integer number (53811022083).

Almost surely, 2^{1356318880345} is an apocalyptic number.

It is an amenable number.

1356318880345 is a deficient number, since it is larger than the sum of its proper divisors (580877914643).

1356318880345 is a wasteful number, since it uses less digits than its factorization.

1356318880345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13265434 (or 13265410 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 1356318880345 in words is "one trillion, three hundred fifty-six billion, three hundred eighteen million, eight hundred eighty thousand, three hundred forty-five".