20532451215453 has 8 divisors (see below), whose sum is σ = 27376788238368. Its totient is φ = 13688207501424.

The previous prime is 20532451215443. The next prime is 20532451215557. The reversal of 20532451215453 is 35451215423502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20532451215453 - 2¹⁸ = 20532450953309 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532451215433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22812150 + ... + 23695127.

It is an arithmetic number, because the mean of its divisors is an integer number (3422098529796).

Almost surely, 2^{20532451215453} is an apocalyptic number.

It is an amenable number.

20532451215453 is a deficient number, since it is larger than the sum of its proper divisors (6844337022915).

20532451215453 is a wasteful number, since it uses less digits than its factorization.

20532451215453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46654443.

The product of its (nonzero) digits is 720000, while the sum is 42.

Adding to 20532451215453 its reverse (35451215423502), we get a palindrome (55983666638955).

The spelling of 20532451215453 in words is "twenty trillion, five hundred thirty-two billion, four hundred fifty-one million, two hundred fifteen thousand, four hundred fifty-three".