20401452436503 has 8 divisors (see below), whose sum is σ = 27202429065600. Its totient is φ = 13600722049208.

The previous prime is 20401452436451. The next prime is 20401452436537. The reversal of 20401452436503 is 30563425410402.

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

It is a cyclic number.

It is not a de Polignac number, because 20401452436503 - 2¹⁰ = 20401452435479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401452436553) 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, 61367043 + ... + 61698596.

It is an arithmetic number, because the mean of its divisors is an integer number (3400303633200).

Almost surely, 2^{20401452436503} is an apocalyptic number.

20401452436503 is a deficient number, since it is larger than the sum of its proper divisors (6800976629097).

20401452436503 is a wasteful number, since it uses less digits than its factorization.

20401452436503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123120901.

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 20401452436503 its reverse (30563425410402), we get a palindrome (50964877846905).

The spelling of 20401452436503 in words is "twenty trillion, four hundred one billion, four hundred fifty-two million, four hundred thirty-six thousand, five hundred three".