1253434872715 has 4 divisors (see below), whose sum is σ = 1504121847264. Its totient is φ = 1002747898168.

The previous prime is 1253434872689. The next prime is 1253434872743. The reversal of 1253434872715 is 5172784343521.

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 1253434872715 - 2⁹ = 1253434872203 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125343487267 + ... + 125343487276.

It is an arithmetic number, because the mean of its divisors is an integer number (376030461816).

Almost surely, 2^{1253434872715} is an apocalyptic number.

1253434872715 is a deficient number, since it is larger than the sum of its proper divisors (250686974549).

1253434872715 is an equidigital number, since it uses as much as digits as its factorization.

1253434872715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250686974548.

The product of its digits is 5644800, while the sum is 52.

The spelling of 1253434872715 in words is "one trillion, two hundred fifty-three billion, four hundred thirty-four million, eight hundred seventy-two thousand, seven hundred fifteen".