20342223455 has 16 divisors (see below), whose sum is σ = 24983562240. Its totient is φ = 15893336352.

The previous prime is 20342223437. The next prime is 20342223457. The reversal of 20342223455 is 55432224302.

It is a cyclic number.

It is not a de Polignac number, because 20342223455 - 2¹⁰ = 20342222431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342223457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17066 + ... + 202424.

It is an arithmetic number, because the mean of its divisors is an integer number (1561472640).

Almost surely, 2^20342223455 is an apocalyptic number.

20342223455 is a deficient number, since it is larger than the sum of its proper divisors (4641338785).

20342223455 is a wasteful number, since it uses less digits than its factorization.

20342223455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185878.

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 20342223455 its reverse (55432224302), we get a palindrome (75774447757).

The spelling of 20342223455 in words is "twenty billion, three hundred forty-two million, two hundred twenty-three thousand, four hundred fifty-five".