1253455500443 has 8 divisors (see below), whose sum is σ = 1254162978768. Its totient is φ = 1252748127744.

The previous prime is 1253455500403. The next prime is 1253455500463. The reversal of 1253455500443 is 3440055543521.

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

It is a cyclic number.

It is not a de Polignac number, because 1253455500443 - 2¹⁰ = 1253455499419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1253455500443.

It is not an unprimeable number, because it can be changed into a prime (1253455500403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39379871 + ... + 39411687.

It is an arithmetic number, because the mean of its divisors is an integer number (156770372346).

Almost surely, 2^{1253455500443} is an apocalyptic number.

1253455500443 is a deficient number, since it is larger than the sum of its proper divisors (707478325).

1253455500443 is a wasteful number, since it uses less digits than its factorization.

1253455500443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52813.

The product of its (nonzero) digits is 720000, while the sum is 41.

The spelling of 1253455500443 in words is "one trillion, two hundred fifty-three billion, four hundred fifty-five million, five hundred thousand, four hundred forty-three".