20001453241252 has 24 divisors (see below), whose sum is σ = 40003909319360. Its totient is φ = 8571836495520.

The previous prime is 20001453241067. The next prime is 20001453241267. The reversal of 20001453241252 is 25214235410002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7814499 + ... + 10053322.

Almost surely, 2^{20001453241252} is an apocalyptic number.

It is an amenable number.

20001453241252 is an abundant number, since it is smaller than the sum of its proper divisors (20002456078108).

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

20001453241252 is a wasteful number, since it uses less digits than its factorization.

20001453241252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17907811 (or 17907809 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 20001453241252 its reverse (25214235410002), we get a palindrome (45215688651254).

The spelling of 20001453241252 in words is "twenty trillion, one billion, four hundred fifty-three million, two hundred forty-one thousand, two hundred fifty-two".