20655046645 has 8 divisors (see below), whose sum is σ = 24788200320. Its totient is φ = 16522607760.

The previous prime is 20655046639. The next prime is 20655046649. The reversal of 20655046645 is 54664055602.

It is a happy number.

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

It is not a de Polignac number, because 20655046645 - 2⁵ = 20655046613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20655046649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112921 + ... + 232510.

It is an arithmetic number, because the mean of its divisors is an integer number (3098525040).

Almost surely, 2^20655046645 is an apocalyptic number.

It is an amenable number.

20655046645 is a deficient number, since it is larger than the sum of its proper divisors (4133153675).

20655046645 is a wasteful number, since it uses less digits than its factorization.

20655046645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357395.

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 20655046645 in words is "twenty billion, six hundred fifty-five million, forty-six thousand, six hundred forty-five".