20324552002001 has 4 divisors (see below), whose sum is σ = 21887979079092. Its totient is φ = 18761124924912.

The previous prime is 20324552001979. The next prime is 20324552002037. The reversal of 20324552002001 is 10020025542302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7496227829776 + 12828324172225 = 2737924^2 + 3581665^2 .

It is a cyclic number.

It is not a de Polignac number, because 20324552002001 - 2²⁶ = 20324484893137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20324552002501) 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, 781713538526 + ... + 781713538551.

It is an arithmetic number, because the mean of its divisors is an integer number (5471994769773).

Almost surely, 2^{20324552002001} is an apocalyptic number.

It is an amenable number.

20324552002001 is a deficient number, since it is larger than the sum of its proper divisors (1563427077091).

20324552002001 is a wasteful number, since it uses less digits than its factorization.

20324552002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563427077090.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20324552002001 its reverse (10020025542302), we get a palindrome (30344577544303).

The spelling of 20324552002001 in words is "twenty trillion, three hundred twenty-four billion, five hundred fifty-two million, two thousand, one".