1317423278088 has 128 divisors (see below), whose sum is σ = 3670543641600. Its totient is φ = 437818867200.

The previous prime is 1317423278081. The next prime is 1317423278159. The reversal of 1317423278088 is 8808723247131.

1317423278088 is a `hidden beast` number, since 131 + 7 + 423 + 2 + 7 + 8 + 0 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1317423278081) 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, 111517270 + ... + 111529082.

It is an arithmetic number, because the mean of its divisors is an integer number (28676122200).

Almost surely, 2^{1317423278088} is an apocalyptic number.

1317423278088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1317423278088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1835271820800).

1317423278088 is an abundant number, since it is smaller than the sum of its proper divisors (2353120363512).

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

1317423278088 is a wasteful number, since it uses less digits than its factorization.

1317423278088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13340 (or 13330 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 1317423278088 in words is "one trillion, three hundred seventeen billion, four hundred twenty-three million, two hundred seventy-eight thousand, eighty-eight".