1315578353457 has 4 divisors (see below), whose sum is σ = 1754104471280. Its totient is φ = 877052235636.

The previous prime is 1315578353417. The next prime is 1315578353491. The reversal of 1315578353457 is 7543538755131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1315578353457 - 2⁷ = 1315578353329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1315578353397 and 1315578353406.

It is not an unprimeable number, because it can be changed into a prime (1315578353417) 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 3 ways as a sum of consecutive naturals, for example, 219263058907 + ... + 219263058912.

It is an arithmetic number, because the mean of its divisors is an integer number (438526117820).

Almost surely, 2^{1315578353457} is an apocalyptic number.

It is an amenable number.

1315578353457 is a deficient number, since it is larger than the sum of its proper divisors (438526117823).

1315578353457 is an equidigital number, since it uses as much as digits as its factorization.

1315578353457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438526117822.

The product of its digits is 26460000, while the sum is 57.

The spelling of 1315578353457 in words is "one trillion, three hundred fifteen billion, five hundred seventy-eight million, three hundred fifty-three thousand, four hundred fifty-seven".