20523241455 has 32 divisors (see below), whose sum is σ = 33625532160. Its totient is φ = 10683321600.

The previous prime is 20523241447. The next prime is 20523241477. The reversal of 20523241455 is 55414232502.

It is a happy number.

It is not a de Polignac number, because 20523241455 - 2³ = 20523241447 is a prime.

It is a super-3 number, since 3×20523241455³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 924931 + ... + 946859.

It is an arithmetic number, because the mean of its divisors is an integer number (1050797880).

Almost surely, 2^20523241455 is an apocalyptic number.

20523241455 is a deficient number, since it is larger than the sum of its proper divisors (13102290705).

20523241455 is a wasteful number, since it uses less digits than its factorization.

20523241455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23431.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 20523241455 its reverse (55414232502), we get a palindrome (75937473957).

The spelling of 20523241455 in words is "twenty billion, five hundred twenty-three million, two hundred forty-one thousand, four hundred fifty-five".