20521054235 has 8 divisors (see below), whose sum is σ = 26863925616. Its totient is φ = 14924403040.

The previous prime is 20521054223. The next prime is 20521054241. The reversal of 20521054235 is 53245012502.

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

It is not a de Polignac number, because 20521054235 - 2¹⁰ = 20521053211 is a prime.

It is a super-2 number, since 2×20521054235² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20521054198 and 20521054207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186554984 + ... + 186555093.

It is an arithmetic number, because the mean of its divisors is an integer number (3357990702).

Almost surely, 2^20521054235 is an apocalyptic number.

20521054235 is a deficient number, since it is larger than the sum of its proper divisors (6342871381).

20521054235 is a wasteful number, since it uses less digits than its factorization.

20521054235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373110093.

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 20521054235 its reverse (53245012502), we get a palindrome (73766066737).

The spelling of 20521054235 in words is "twenty billion, five hundred twenty-one million, fifty-four thousand, two hundred thirty-five".