1253621052573 has 8 divisors (see below), whose sum is σ = 1671500241600. Its totient is φ = 835744615968.

The previous prime is 1253621052559. The next prime is 1253621052577. The reversal of 1253621052573 is 3752501263521.

It is a happy number.

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

It is not a de Polignac number, because 1253621052573 - 2³² = 1249326085277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253621052577) 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, 894873 + ... + 1818801.

It is an arithmetic number, because the mean of its divisors is an integer number (208937530200).

Almost surely, 2^{1253621052573} is an apocalyptic number.

It is an amenable number.

1253621052573 is a deficient number, since it is larger than the sum of its proper divisors (417879189027).

1253621052573 is an equidigital number, since it uses as much as digits as its factorization.

1253621052573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376211.

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 1253621052573 in words is "one trillion, two hundred fifty-three billion, six hundred twenty-one million, fifty-two thousand, five hundred seventy-three".