20045315355 has 32 divisors (see below), whose sum is σ = 34547036160. Its totient is φ = 9866344320.

The previous prime is 20045315317. The next prime is 20045315363. The reversal of 20045315355 is 55351354002.

It is a happy number.

It is not a de Polignac number, because 20045315355 - 2⁶ = 20045315291 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1294710 + ... + 1310100.

It is an arithmetic number, because the mean of its divisors is an integer number (1079594880).

Almost surely, 2^20045315355 is an apocalyptic number.

20045315355 is a deficient number, since it is larger than the sum of its proper divisors (14501720805).

20045315355 is a wasteful number, since it uses less digits than its factorization.

20045315355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22091.

The product of its (nonzero) digits is 45000, while the sum is 33.

Adding to 20045315355 its reverse (55351354002), we get a palindrome (75396669357).

The spelling of 20045315355 in words is "twenty billion, forty-five million, three hundred fifteen thousand, three hundred fifty-five".