20450232501523 has 96 divisors (see below), whose sum is σ = 24184353473280. Its totient is φ = 17245933689600.

The previous prime is 20450232501463. The next prime is 20450232501541. The reversal of 20450232501523 is 32510523205402.

It is a de Polignac number, because none of the positive numbers 2^k-20450232501523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20450232501563) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11292231288 + ... + 11292233098.

It is an arithmetic number, because the mean of its divisors is an integer number (251920348680).

Almost surely, 2^{20450232501523} is an apocalyptic number.

20450232501523 is a deficient number, since it is larger than the sum of its proper divisors (3734120971757).

20450232501523 is a wasteful number, since it uses less digits than its factorization.

20450232501523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089 (or 3078 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 20450232501523 its reverse (32510523205402), we get a palindrome (52960755706925).

The spelling of 20450232501523 in words is "twenty trillion, four hundred fifty billion, two hundred thirty-two million, five hundred one thousand, five hundred twenty-three".