20656023535 has 16 divisors (see below), whose sum is σ = 28333555200. Its totient is φ = 14161483296.

The previous prime is 20656023533. The next prime is 20656023593. The reversal of 20656023535 is 53532065602.

It is a cyclic number.

It is not a de Polignac number, because 20656023535 - 2¹ = 20656023533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20656023494 and 20656023503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20656023533) 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 15 ways as a sum of consecutive naturals, for example, 145036 + ... + 249694.

It is an arithmetic number, because the mean of its divisors is an integer number (1770847200).

Almost surely, 2^20656023535 is an apocalyptic number.

20656023535 is a deficient number, since it is larger than the sum of its proper divisors (7677531665).

20656023535 is a wasteful number, since it uses less digits than its factorization.

20656023535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110310.

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 20656023535 in words is "twenty billion, six hundred fifty-six million, twenty-three thousand, five hundred thirty-five".