20023355355 has 16 divisors (see below), whose sum is σ = 32320887840. Its totient is φ = 10584616448.

The previous prime is 20023355329. The next prime is 20023355377. The reversal of 20023355355 is 55355332002.

It is a cyclic number.

It is not a de Polignac number, because 20023355355 - 2⁵ = 20023355323 is a prime.

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, 5904900 + ... + 5908289.

It is an arithmetic number, because the mean of its divisors is an integer number (2020055490).

Almost surely, 2^20023355355 is an apocalyptic number.

20023355355 is a deficient number, since it is larger than the sum of its proper divisors (12297532485).

20023355355 is a wasteful number, since it uses less digits than its factorization.

20023355355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11813310.

The product of its (nonzero) digits is 67500, while the sum is 33.

Adding to 20023355355 its reverse (55355332002), we get a palindrome (75378687357).

The spelling of 20023355355 in words is "twenty billion, twenty-three million, three hundred fifty-five thousand, three hundred fifty-five".