1322609685072 has 160 divisors (see below), whose sum is σ = 3728779676160. Its totient is φ = 401545175040.

The previous prime is 1322609684971. The next prime is 1322609685151. The reversal of 1322609685072 is 2705869062231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16351513 + ... + 16432199.

It is an arithmetic number, because the mean of its divisors is an integer number (23304872976).

Almost surely, 2^{1322609685072} is an apocalyptic number.

1322609685072 is a gapful number since it is divisible by the number (12) 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 1322609685072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1864389838080).

1322609685072 is an abundant number, since it is smaller than the sum of its proper divisors (2406169991088).

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

1322609685072 is a wasteful number, since it uses less digits than its factorization.

1322609685072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81061 (or 81055 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 1322609685072 in words is "one trillion, three hundred twenty-two billion, six hundred nine million, six hundred eighty-five thousand, seventy-two".