20315263345255 has 8 divisors (see below), whose sum is σ = 24387986127024. Its totient is φ = 16245763934400.

The previous prime is 20315263345219. The next prime is 20315263345379. The reversal of 20315263345255 is 55254336251302.

It is a happy number.

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

It is not a de Polignac number, because 20315263345255 - 2¹³ = 20315263337063 is a prime.

It is a super-2 number, since 2×20315263345255² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805828861 + ... + 805854070.

It is an arithmetic number, because the mean of its divisors is an integer number (3048498265878).

Almost surely, 2^{20315263345255} is an apocalyptic number.

20315263345255 is a deficient number, since it is larger than the sum of its proper divisors (4072722781769).

20315263345255 is a wasteful number, since it uses less digits than its factorization.

20315263345255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611685457.

The product of its (nonzero) digits is 3240000, while the sum is 46.

Adding to 20315263345255 its reverse (55254336251302), we get a palindrome (75569599596557).

The spelling of 20315263345255 in words is "twenty trillion, three hundred fifteen billion, two hundred sixty-three million, three hundred forty-five thousand, two hundred fifty-five".