1253345123344 has 60 divisors (see below), whose sum is σ = 2523253511856. Its totient is φ = 602962024896.

The previous prime is 1253345123339. The next prime is 1253345123377. The reversal of 1253345123344 is 4433215433521.

It is a junction number, because it is equal to n+sod(n) for n = 1253345123297 and 1253345123306.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1665967 + ... + 2298289.

Almost surely, 2^{1253345123344} is an apocalyptic number.

It is an amenable number.

1253345123344 is an abundant number, since it is smaller than the sum of its proper divisors (1269908388512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253345123344 is an equidigital number, since it uses as much as digits as its factorization.

1253345123344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632484 (or 632435 counting only the distinct ones).

The product of its digits is 518400, while the sum is 40.

The spelling of 1253345123344 in words is "one trillion, two hundred fifty-three billion, three hundred forty-five million, one hundred twenty-three thousand, three hundred forty-four".