1257344048267 has 4 divisors (see below), whose sum is σ = 1257367748616. Its totient is φ = 1257320347920.

The previous prime is 1257344048263. The next prime is 1257344048291. The reversal of 1257344048267 is 7628404437521.

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

It is a cyclic number.

It is not a de Polignac number, because 1257344048267 - 2² = 1257344048263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1257344048263) 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, 11770418 + ... + 11876759.

It is an arithmetic number, because the mean of its divisors is an integer number (314341937154).

Almost surely, 2^{1257344048267} is an apocalyptic number.

1257344048267 is a deficient number, since it is larger than the sum of its proper divisors (23700349).

1257344048267 is an equidigital number, since it uses as much as digits as its factorization.

1257344048267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23700348.

The product of its (nonzero) digits is 9031680, while the sum is 53.

The spelling of 1257344048267 in words is "one trillion, two hundred fifty-seven billion, three hundred forty-four million, forty-eight thousand, two hundred sixty-seven".