20521045414 has 8 divisors (see below), whose sum is σ = 30782180088. Its totient is φ = 10260318720.

The previous prime is 20521045409. The next prime is 20521045427. The reversal of 20521045414 is 41454012502.

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

It is a super-2 number, since 2×20521045414² (a number of 21 digits) contains 22 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123174 + ... + 237094.

It is an arithmetic number, because the mean of its divisors is an integer number (3847772511).

Almost surely, 2^20521045414 is an apocalyptic number.

20521045414 is a deficient number, since it is larger than the sum of its proper divisors (10261134674).

20521045414 is a wasteful number, since it uses less digits than its factorization.

20521045414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203990.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 20521045414 its reverse (41454012502), we get a palindrome (61975057916).

The spelling of 20521045414 in words is "twenty billion, five hundred twenty-one million, forty-five thousand, four hundred fourteen".