1001322052540 has 24 divisors (see below), whose sum is σ = 2213448748560. Its totient is φ = 379448356608.

The previous prime is 1001322052517. The next prime is 1001322052543. The reversal of 1001322052540 is 452502231001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001322052543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1317528637 + ... + 1317529396.

It is an arithmetic number, because the mean of its divisors is an integer number (92227031190).

Almost surely, 2^{1001322052540} is an apocalyptic number.

1001322052540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001322052540 is an abundant number, since it is smaller than the sum of its proper divisors (1212126696020).

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

1001322052540 is a wasteful number, since it uses less digits than its factorization.

1001322052540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635058061 (or 2635058059 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 1001322052540 its reverse (452502231001), we get a palindrome (1453824283541).

The spelling of 1001322052540 in words is "one trillion, one billion, three hundred twenty-two million, fifty-two thousand, five hundred forty".