20024621655623 has 16 divisors (see below), whose sum is σ = 22845209216256. Its totient is φ = 17388039052800.

The previous prime is 20024621655607. The next prime is 20024621655679. The reversal of 20024621655623 is 32655612642002.

It is not a de Polignac number, because 20024621655623 - 2⁴ = 20024621655607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20024621655023) 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, 22790036 + ... + 23652377.

It is an arithmetic number, because the mean of its divisors is an integer number (1427825576016).

Almost surely, 2^{20024621655623} is an apocalyptic number.

20024621655623 is a deficient number, since it is larger than the sum of its proper divisors (2820587560633).

20024621655623 is a wasteful number, since it uses less digits than its factorization.

20024621655623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46444394.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 20024621655623 in words is "twenty trillion, twenty-four billion, six hundred twenty-one million, six hundred fifty-five thousand, six hundred twenty-three".