20645055035 has 16 divisors (see below), whose sum is σ = 27029933280. Its totient is φ = 15012541440.

The previous prime is 20645055031. The next prime is 20645055059. The reversal of 20645055035 is 53055054602.

It is not a de Polignac number, because 20645055035 - 2² = 20645055031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20645054986 and 20645055004.

It is not an unprimeable number, because it can be changed into a prime (20645055031) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 468011 + ... + 510219.

It is an arithmetic number, because the mean of its divisors is an integer number (1689370830).

Almost surely, 2^20645055035 is an apocalyptic number.

20645055035 is a deficient number, since it is larger than the sum of its proper divisors (6384878245).

20645055035 is a wasteful number, since it uses less digits than its factorization.

20645055035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51118.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 20645055035 in words is "twenty billion, six hundred forty-five million, fifty-five thousand, thirty-five".