20526445745 has 32 divisors (see below), whose sum is σ = 28259425152. Its totient is φ = 14178696192.

The previous prime is 20526445673. The next prime is 20526445747. The reversal of 20526445745 is 54754462502.

It is a cyclic number.

It is not a de Polignac number, because 20526445745 - 2²⁶ = 20459336881 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20526445696 and 20526445705.

It is not an unprimeable number, because it can be changed into a prime (20526445747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123134 + ... + 237096.

It is an arithmetic number, because the mean of its divisors is an integer number (883107036).

Almost surely, 2^20526445745 is an apocalyptic number.

It is an amenable number.

20526445745 is a deficient number, since it is larger than the sum of its proper divisors (7732979407).

20526445745 is a wasteful number, since it uses less digits than its factorization.

20526445745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114161.

The product of its (nonzero) digits is 1344000, while the sum is 44.

The spelling of 20526445745 in words is "twenty billion, five hundred twenty-six million, four hundred forty-five thousand, seven hundred forty-five".