20533254345 has 24 divisors (see below), whose sum is σ = 35597717376. Its totient is φ = 10948994208.

The previous prime is 20533254319. The next prime is 20533254359. The reversal of 20533254345 is 54345233502.

20533254345 is a `hidden beast` number, since 20 + 53 + 3 + 2 + 543 + 45 = 666.

It is not a de Polignac number, because 20533254345 - 2⁸ = 20533254089 is a prime.

It is a super-2 number, since 2×20533254345² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213714 + ... + 294516.

It is an arithmetic number, because the mean of its divisors is an integer number (1483238224).

Almost surely, 2^20533254345 is an apocalyptic number.

It is an amenable number.

20533254345 is a deficient number, since it is larger than the sum of its proper divisors (15064463031).

20533254345 is a wasteful number, since it uses less digits than its factorization.

20533254345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86461 (or 86458 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 36.

Adding to 20533254345 its reverse (54345233502), we get a palindrome (74878487847).

The spelling of 20533254345 in words is "twenty billion, five hundred thirty-three million, two hundred fifty-four thousand, three hundred forty-five".