20315326570 has 128 divisors (see below), whose sum is σ = 49451254272. Its totient is φ = 5814067200.

The previous prime is 20315326561. The next prime is 20315326609. The reversal of 20315326570 is 7562351302.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 517764 + ... + 555616.

It is an arithmetic number, because the mean of its divisors is an integer number (386337924).

Almost surely, 2^20315326570 is an apocalyptic number.

20315326570 is an abundant number, since it is smaller than the sum of its proper divisors (29135927702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20315326570 is a wasteful number, since it uses less digits than its factorization.

20315326570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37936.

The product of its (nonzero) digits is 37800, while the sum is 34.

Adding to 20315326570 its reverse (7562351302), we get a palindrome (27877677872).

The spelling of 20315326570 in words is "twenty billion, three hundred fifteen million, three hundred twenty-six thousand, five hundred seventy".