1325678899776 has 504 divisors, whose sum is σ = 4488948376416. Its totient is φ = 341428469760.

The previous prime is 1325678899763. The next prime is 1325678899781. The reversal of 1325678899776 is 6779988765231.

It is a super-2 number, since 2×1325678899776² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (78) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2297536800 + ... + 2297537376.

It is an arithmetic number, because the mean of its divisors is an integer number (8906643604).

Almost surely, 2^{1325678899776} is an apocalyptic number.

1325678899776 is a gapful number since it is divisible by the number (16) 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 1325678899776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2244474188208).

1325678899776 is an abundant number, since it is smaller than the sum of its proper divisors (3163269476640).

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

1325678899776 is a wasteful number, since it uses less digits than its factorization.

1325678899776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915 (or 749 counting only the distinct ones).

The product of its digits is 1920360960, while the sum is 78.

The spelling of 1325678899776 in words is "one trillion, three hundred twenty-five billion, six hundred seventy-eight million, eight hundred ninety-nine thousand, seven hundred seventy-six".