20315321111415 has 32 divisors (see below), whose sum is σ = 35472550205952. Its totient is φ = 9846219152000.

The previous prime is 20315321111363. The next prime is 20315321111429. The reversal of 20315321111415 is 51411112351302.

It is not a de Polignac number, because 20315321111415 - 2⁸ = 20315321111159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22260756 + ... + 23155385.

It is an arithmetic number, because the mean of its divisors is an integer number (1108517193936).

Almost surely, 2^{20315321111415} is an apocalyptic number.

20315321111415 is a deficient number, since it is larger than the sum of its proper divisors (15157229094537).

20315321111415 is a wasteful number, since it uses less digits than its factorization.

20315321111415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45418871.

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 20315321111415 its reverse (51411112351302), we get a palindrome (71726433462717).

The spelling of 20315321111415 in words is "twenty trillion, three hundred fifteen billion, three hundred twenty-one million, one hundred eleven thousand, four hundred fifteen".