20024215655 has 16 divisors (see below), whose sum is σ = 24880504320. Its totient is φ = 15452758272.

The previous prime is 20024215649. The next prime is 20024215693. The reversal of 20024215655 is 55651242002.

It is a cyclic number.

It is not a de Polignac number, because 20024215655 - 2¹⁰ = 20024214631 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96122 + ... + 222008.

It is an arithmetic number, because the mean of its divisors is an integer number (1555031520).

Almost surely, 2^20024215655 is an apocalyptic number.

20024215655 is a deficient number, since it is larger than the sum of its proper divisors (4856288665).

20024215655 is a wasteful number, since it uses less digits than its factorization.

20024215655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127018.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 20024215655 its reverse (55651242002), we get a palindrome (75675457657).

The spelling of 20024215655 in words is "twenty billion, twenty-four million, two hundred fifteen thousand, six hundred fifty-five".