1317940374528 has 352 divisors, whose sum is σ = 4165425561600. Its totient is φ = 410197229568.

The previous prime is 1317940374523. The next prime is 1317940374547. The reversal of 1317940374528 is 8254730497131.

1317940374528 is a `hidden beast` number, since 1 + 3 + 1 + 7 + 9 + 40 + 3 + 74 + 528 = 666.

It is a super-2 number, since 2×1317940374528² (a number of 25 digits) contains 22 as substring.

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 (1317940374523) 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, 59680993 + ... + 59703071.

Almost surely, 2^{1317940374528} is an apocalyptic number.

1317940374528 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 1317940374528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2082712780800).

1317940374528 is an abundant number, since it is smaller than the sum of its proper divisors (2847485187072).

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

1317940374528 is a wasteful number, since it uses less digits than its factorization.

1317940374528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22252 (or 22228 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 1317940374528 in words is "one trillion, three hundred seventeen billion, nine hundred forty million, three hundred seventy-four thousand, five hundred twenty-eight".