318861510055 has 32 divisors (see below), whose sum is σ = 443869927488. Its totient is φ = 217321267200.

The previous prime is 318861510047. The next prime is 318861510059. The reversal of 318861510055 is 550015168813.

It is not a de Polignac number, because 318861510055 - 2³ = 318861510047 is a prime.

It is a super-2 number, since 2×318861510055² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 318861509993 and 318861510020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318861510059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 513966 + ... + 949675.

It is an arithmetic number, because the mean of its divisors is an integer number (13870935234).

Almost surely, 2^318861510055 is an apocalyptic number.

318861510055 is a deficient number, since it is larger than the sum of its proper divisors (125008417433).

318861510055 is a wasteful number, since it uses less digits than its factorization.

318861510055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463907.

The product of its (nonzero) digits is 144000, while the sum is 43.

Adding to 318861510055 its reverse (550015168813), we get a palindrome (868876678868).

The spelling of 318861510055 in words is "three hundred eighteen billion, eight hundred sixty-one million, five hundred ten thousand, fifty-five".