20654565023 has 8 divisors (see below), whose sum is σ = 21036571248. Its totient is φ = 20275729344.

The previous prime is 20654565017. The next prime is 20654565053. The reversal of 20654565023 is 32056545602.

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

It is a cyclic number.

It is not a de Polignac number, because 20654565023 - 2¹⁰ = 20654563999 is a prime.

It is a super-2 number, since 2×20654565023² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20654565053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779486 + ... + 805547.

It is an arithmetic number, because the mean of its divisors is an integer number (2629571406).

Almost surely, 2^20654565023 is an apocalyptic number.

20654565023 is a deficient number, since it is larger than the sum of its proper divisors (382006225).

20654565023 is a wasteful number, since it uses less digits than its factorization.

20654565023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585273.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 20654565023 in words is "twenty billion, six hundred fifty-four million, five hundred sixty-five thousand, twenty-three".