1253340145509 has 16 divisors (see below), whose sum is σ = 1672784735232. Its totient is φ = 834728026608.

The previous prime is 1253340145483. The next prime is 1253340145559. The reversal of 1253340145509 is 9055410433521.

It is not a de Polignac number, because 1253340145509 - 2⁹ = 1253340144997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253340145559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31405482 + ... + 31445364.

It is an arithmetic number, because the mean of its divisors is an integer number (104549045952).

Almost surely, 2^{1253340145509} is an apocalyptic number.

It is an amenable number.

1253340145509 is a deficient number, since it is larger than the sum of its proper divisors (419444589723).

1253340145509 is a wasteful number, since it uses less digits than its factorization.

1253340145509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50056.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 1253340145509 in words is "one trillion, two hundred fifty-three billion, three hundred forty million, one hundred forty-five thousand, five hundred nine".