20105522445 has 16 divisors (see below), whose sum is σ = 32179344192. Its totient is φ = 10719442560.

The previous prime is 20105522443. The next prime is 20105522449. The reversal of 20105522445 is 54422550102.

It is not a de Polignac number, because 20105522445 - 2¹ = 20105522443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20105522443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171136 + ... + 263625.

It is an arithmetic number, because the mean of its divisors is an integer number (2011209012).

Almost surely, 2^20105522445 is an apocalyptic number.

It is an amenable number.

20105522445 is a deficient number, since it is larger than the sum of its proper divisors (12073821747).

20105522445 is a wasteful number, since it uses less digits than its factorization.

20105522445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437852.

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 20105522445 in words is "twenty billion, one hundred five million, five hundred twenty-two thousand, four hundred forty-five".