20315321111355 has 8 divisors (see below), whose sum is σ = 32504513778192. Its totient is φ = 10834837926048.

The previous prime is 20315321111257. The next prime is 20315321111357. The reversal of 20315321111355 is 55311112351302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20315321111355 - 2¹⁶ = 20315321045819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20315321111357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677177370364 + ... + 677177370393.

It is an arithmetic number, because the mean of its divisors is an integer number (4063064222274).

Almost surely, 2^{20315321111355} is an apocalyptic number.

20315321111355 is a deficient number, since it is larger than the sum of its proper divisors (12189192666837).

20315321111355 is a wasteful number, since it uses less digits than its factorization.

20315321111355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354354740765.

The product of its (nonzero) digits is 13500, while the sum is 33.

Adding to 20315321111355 its reverse (55311112351302), we get a palindrome (75626433462657).

The spelling of 20315321111355 in words is "twenty trillion, three hundred fifteen billion, three hundred twenty-one million, one hundred eleven thousand, three hundred fifty-five".