1257913970207 has 4 divisors (see below), whose sum is σ = 1257922452360. Its totient is φ = 1257905488056.

The previous prime is 1257913970179. The next prime is 1257913970213. The reversal of 1257913970207 is 7020793197521.

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 1257913970207 - 2¹⁰ = 1257913969183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257913970237) 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, 4014593 + ... + 4316570.

It is an arithmetic number, because the mean of its divisors is an integer number (314480613090).

Almost surely, 2^{1257913970207} is an apocalyptic number.

1257913970207 is a deficient number, since it is larger than the sum of its proper divisors (8482153).

1257913970207 is an equidigital number, since it uses as much as digits as its factorization.

1257913970207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8482152.

The product of its (nonzero) digits is 1666980, while the sum is 53.

The spelling of 1257913970207 in words is "one trillion, two hundred fifty-seven billion, nine hundred thirteen million, nine hundred seventy thousand, two hundred seven".