1253741653465 has 8 divisors (see below), whose sum is σ = 1719417124800. Its totient is φ = 859708562352.

The previous prime is 1253741653379. The next prime is 1253741653469. The reversal of 1253741653465 is 5643561473521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253741653465 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1253741653469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17910595015 + ... + 17910595084.

It is an arithmetic number, because the mean of its divisors is an integer number (214927140600).

Almost surely, 2^{1253741653465} is an apocalyptic number.

It is an amenable number.

1253741653465 is a deficient number, since it is larger than the sum of its proper divisors (465675471335).

1253741653465 is an equidigital number, since it uses as much as digits as its factorization.

1253741653465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35821190111.

The product of its digits is 9072000, while the sum is 52.

The spelling of 1253741653465 in words is "one trillion, two hundred fifty-three billion, seven hundred forty-one million, six hundred fifty-three thousand, four hundred sixty-five".