1253444424543 has 12 divisors (see below), whose sum is σ = 1859464101768. Its totient is φ = 813045031920.

The previous prime is 1253444424539. The next prime is 1253444424587. The reversal of 1253444424543 is 3454244443521.

1253444424543 is a `hidden beast` number, since 1 + 2 + 5 + 3 + 44 + 44 + 24 + 543 = 666.

It is not a de Polignac number, because 1253444424543 - 2² = 1253444424539 is a prime.

It is a super-2 number, since 2×1253444424543² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253444424343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1882048353 + ... + 1882049018.

It is an arithmetic number, because the mean of its divisors is an integer number (154955341814).

Almost surely, 2^{1253444424543} is an apocalyptic number.

1253444424543 is a deficient number, since it is larger than the sum of its proper divisors (606019677225).

1253444424543 is a wasteful number, since it uses less digits than its factorization.

1253444424543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3764097414 (or 3764097411 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 45.

The spelling of 1253444424543 in words is "one trillion, two hundred fifty-three billion, four hundred forty-four million, four hundred twenty-four thousand, five hundred forty-three".