20045213464 has 32 divisors (see below), whose sum is σ = 37691781120. Its totient is φ = 9994111776.

The previous prime is 20045213449. The next prime is 20045213467. The reversal of 20045213464 is 46431254002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045213467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7458729 + ... + 7461415.

It is an arithmetic number, because the mean of its divisors is an integer number (1177868160).

Almost surely, 2^20045213464 is an apocalyptic number.

It is an amenable number.

20045213464 is a deficient number, since it is larger than the sum of its proper divisors (17646567656).

20045213464 is a wasteful number, since it uses less digits than its factorization.

20045213464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4999 (or 4995 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 20045213464 its reverse (46431254002), we get a palindrome (66476467466).

The spelling of 20045213464 in words is "twenty billion, forty-five million, two hundred thirteen thousand, four hundred sixty-four".