1315578353447 has 8 divisors (see below), whose sum is σ = 1346763467280. Its totient is φ = 1284420070080.

The previous prime is 1315578353417. The next prime is 1315578353491. The reversal of 1315578353447 is 7443538755131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1315578353447 - 2²² = 1315574159143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1315578353392 and 1315578353401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315578353417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6608372 + ... + 6804537.

It is an arithmetic number, because the mean of its divisors is an integer number (168345433410).

Almost surely, 2^{1315578353447} is an apocalyptic number.

1315578353447 is a deficient number, since it is larger than the sum of its proper divisors (31185113833).

1315578353447 is a wasteful number, since it uses less digits than its factorization.

1315578353447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13415233.

The product of its digits is 21168000, while the sum is 56.

The spelling of 1315578353447 in words is "one trillion, three hundred fifteen billion, five hundred seventy-eight million, three hundred fifty-three thousand, four hundred forty-seven".