1252421133544 has 16 divisors (see below), whose sum is σ = 2683759572000. Its totient is φ = 536751914352.

The previous prime is 1252421133527. The next prime is 1252421133569. The reversal of 1252421133544 is 4453311242521.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11182331494 + ... + 11182331605.

It is an arithmetic number, because the mean of its divisors is an integer number (167734973250).

Almost surely, 2^{1252421133544} is an apocalyptic number.

1252421133544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1252421133544 is an abundant number, since it is smaller than the sum of its proper divisors (1431338438456).

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

1252421133544 is a wasteful number, since it uses less digits than its factorization.

1252421133544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22364663112 (or 22364663108 counting only the distinct ones).

The product of its digits is 115200, while the sum is 37.

The spelling of 1252421133544 in words is "one trillion, two hundred fifty-two billion, four hundred twenty-one million, one hundred thirty-three thousand, five hundred forty-four".