20035554645 has 16 divisors (see below), whose sum is σ = 32196879360. Its totient is φ = 10638965184.

The previous prime is 20035554641. The next prime is 20035554647. The reversal of 20035554645 is 54645553002.

It is not a de Polignac number, because 20035554645 - 2² = 20035554641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20035554641) 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, 2912949 + ... + 2919818.

It is an arithmetic number, because the mean of its divisors is an integer number (2012304960).

Almost surely, 2^20035554645 is an apocalyptic number.

It is an amenable number.

20035554645 is a deficient number, since it is larger than the sum of its proper divisors (12161324715).

20035554645 is a wasteful number, since it uses less digits than its factorization.

20035554645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5833004.

The product of its (nonzero) digits is 360000, while the sum is 39.

The spelling of 20035554645 in words is "twenty billion, thirty-five million, five hundred fifty-four thousand, six hundred forty-five".