1321525335340 has 48 divisors (see below), whose sum is σ = 3185883574272. Its totient is φ = 451062576576.

The previous prime is 1321525335331. The next prime is 1321525335401. The reversal of 1321525335340 is 435335251231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321525335340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21133504 + ... + 21195943.

It is an arithmetic number, because the mean of its divisors is an integer number (66372574464).

Almost surely, 2^{1321525335340} is an apocalyptic number.

1321525335340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321525335340 is an abundant number, since it is smaller than the sum of its proper divisors (1864358238932).

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

1321525335340 is a wasteful number, since it uses less digits than its factorization.

1321525335340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42329686 (or 42329684 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 1321525335340 in words is "one trillion, three hundred twenty-one billion, five hundred twenty-five million, three hundred thirty-five thousand, three hundred forty".