1375297270447 has 4 divisors (see below), whose sum is σ = 1375300120816. Its totient is φ = 1375294420080.

The previous prime is 1375297270411. The next prime is 1375297270481. The reversal of 1375297270447 is 7440727925731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1375297270447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1375297270391 and 1375297270400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375297270147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502179 + ... + 1732852.

It is an arithmetic number, because the mean of its divisors is an integer number (343825030204).

Almost surely, 2^{1375297270447} is an apocalyptic number.

1375297270447 is a deficient number, since it is larger than the sum of its proper divisors (2850369).

1375297270447 is an equidigital number, since it uses as much as digits as its factorization.

1375297270447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850368.

The product of its (nonzero) digits is 20744640, while the sum is 58.

The spelling of 1375297270447 in words is "one trillion, three hundred seventy-five billion, two hundred ninety-seven million, two hundred seventy thousand, four hundred forty-seven".