1252044453680 has 20 divisors (see below), whose sum is σ = 2911003354992. Its totient is φ = 500817781440.

The previous prime is 1252044453679. The next prime is 1252044453689. The reversal of 1252044453680 is 863544402521.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (1252044453689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7825277756 + ... + 7825277915.

Almost surely, 2^{1252044453680} is an apocalyptic number.

1252044453680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252044453680 is an abundant number, since it is smaller than the sum of its proper divisors (1658958901312).

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

1252044453680 is a wasteful number, since it uses less digits than its factorization.

1252044453680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15650555684 (or 15650555678 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 44.

The spelling of 1252044453680 in words is "one trillion, two hundred fifty-two billion, forty-four million, four hundred fifty-three thousand, six hundred eighty".