1253561453247 has 32 divisors (see below), whose sum is σ = 1699502515200. Its totient is φ = 821791669248.

The previous prime is 1253561453197. The next prime is 1253561453273. The reversal of 1253561453247 is 7423541653521.

It is not a de Polignac number, because 1253561453247 - 2¹¹ = 1253561451199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1253561453196 and 1253561453205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253561453747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28916254 + ... + 28959572.

It is an arithmetic number, because the mean of its divisors is an integer number (53109453600).

Almost surely, 2^{1253561453247} is an apocalyptic number.

1253561453247 is a deficient number, since it is larger than the sum of its proper divisors (445941061953).

1253561453247 is a wasteful number, since it uses less digits than its factorization.

1253561453247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44055.

The product of its digits is 3024000, while the sum is 48.

The spelling of 1253561453247 in words is "one trillion, two hundred fifty-three billion, five hundred sixty-one million, four hundred fifty-three thousand, two hundred forty-seven".