20315111413264 has 20 divisors (see below), whose sum is σ = 40717787962860. Its totient is φ = 9807295164800.

The previous prime is 20315111413241. The next prime is 20315111413277. The reversal of 20315111413264 is 46231411151302.

It can be written as a sum of positive squares in 2 ways, for example, as 11982120710400 + 8332990702864 = 3461520^2 + 2886692^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21891283387 + ... + 21891284314.

It is an arithmetic number, because the mean of its divisors is an integer number (2035889398143).

Almost surely, 2^{20315111413264} is an apocalyptic number.

It is an amenable number.

20315111413264 is an abundant number, since it is smaller than the sum of its proper divisors (20402676549596).

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

20315111413264 is a wasteful number, since it uses less digits than its factorization.

20315111413264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43782567738 (or 43782567732 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 20315111413264 its reverse (46231411151302), we get a palindrome (66546522564566).

The spelling of 20315111413264 in words is "twenty trillion, three hundred fifteen billion, one hundred eleven million, four hundred thirteen thousand, two hundred sixty-four".