20223232555 has 16 divisors (see below), whose sum is σ = 25715352960. Its totient is φ = 15215081472.

The previous prime is 20223232529. The next prime is 20223232573. The reversal of 20223232555 is 55523232202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20223232555 is a prime.

It is a super-2 number, since 2×20223232555² (a number of 21 digits) contains 22 as substring.

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, 18526 + ... + 201964.

It is an arithmetic number, because the mean of its divisors is an integer number (1607209560).

Almost surely, 2^20223232555 is an apocalyptic number.

20223232555 is a deficient number, since it is larger than the sum of its proper divisors (5492120405).

20223232555 is a wasteful number, since it uses less digits than its factorization.

20223232555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184758.

The product of its (nonzero) digits is 36000, while the sum is 31.

Adding to 20223232555 its reverse (55523232202), we get a palindrome (75746464757).

The spelling of 20223232555 in words is "twenty billion, two hundred twenty-three million, two hundred thirty-two thousand, five hundred fifty-five".