20315305423153 has 32 divisors (see below), whose sum is σ = 22242447118080. Its totient is φ = 18442784505600.

The previous prime is 20315305423117. The next prime is 20315305423157. The reversal of 20315305423153 is 35132450351302.

It is not a de Polignac number, because 20315305423153 - 2¹⁷ = 20315305292081 is a prime.

It is a super-2 number, since 2×20315305423153² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20315305423157) 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 31 ways as a sum of consecutive naturals, for example, 729519076 + ... + 729546922.

It is an arithmetic number, because the mean of its divisors is an integer number (695076472440).

Almost surely, 2^{20315305423153} is an apocalyptic number.

It is an amenable number.

20315305423153 is a deficient number, since it is larger than the sum of its proper divisors (1927141694927).

20315305423153 is a wasteful number, since it uses less digits than its factorization.

20315305423153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31657.

The product of its (nonzero) digits is 162000, while the sum is 37.

Adding to 20315305423153 its reverse (35132450351302), we get a palindrome (55447755774455).

The spelling of 20315305423153 in words is "twenty trillion, three hundred fifteen billion, three hundred five million, four hundred twenty-three thousand, one hundred fifty-three".