12315622315554 has 24 divisors (see below), whose sum is σ = 26838090255132. Its totient is φ = 4081477914720.

The previous prime is 12315622315463. The next prime is 12315622315573. The reversal of 12315622315554 is 45551322651321.

12315622315554 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 5 + 62 + 2 + 31 + 5 + 554 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12130139637225 + 185482678329 = 3482835^2 + 430677^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1977457117 + ... + 1977463344.

Almost surely, 2^{12315622315554} is an apocalyptic number.

12315622315554 is an abundant number, since it is smaller than the sum of its proper divisors (14522467939578).

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

12315622315554 is a wasteful number, since it uses less digits than its factorization.

12315622315554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954920642 (or 3954920639 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 45.

Adding to 12315622315554 its reverse (45551322651321), we get a palindrome (57866944966875).

It can be divided in two parts, 1231562 and 2315554, that added together give a triangular number (3547116 = T₂₆₆₃).

The spelling of 12315622315554 in words is "twelve trillion, three hundred fifteen billion, six hundred twenty-two million, three hundred fifteen thousand, five hundred fifty-four".