20655450759 has 8 divisors (see below), whose sum is σ = 27581284080. Its totient is φ = 13749958976.

The previous prime is 20655450731. The next prime is 20655450763. The reversal of 20655450759 is 95705455602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20655450759 is a prime.

It is a super-3 number, since 3×20655450759³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20655450769) 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 7 ways as a sum of consecutive naturals, for example, 5083014 + ... + 5087075.

It is an arithmetic number, because the mean of its divisors is an integer number (3447660510).

Almost surely, 2^20655450759 is an apocalyptic number.

20655450759 is a deficient number, since it is larger than the sum of its proper divisors (6925833321).

20655450759 is a wasteful number, since it uses less digits than its factorization.

20655450759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10170769.

The product of its (nonzero) digits is 1890000, while the sum is 48.

The spelling of 20655450759 in words is "twenty billion, six hundred fifty-five million, four hundred fifty thousand, seven hundred fifty-nine".