2152305522440 has 64 divisors (see below), whose sum is σ = 4954417747200. Its totient is φ = 841123445248.

The previous prime is 2152305522421. The next prime is 2152305522449. The reversal of 2152305522440 is 442255032512.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2152305522440.

It is not an unprimeable number, because it can be changed into a prime (2152305522449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63707 + ... + 2075733.

It is an arithmetic number, because the mean of its divisors is an integer number (77412777300).

Almost surely, 2^{2152305522440} is an apocalyptic number.

2152305522440 is a gapful number since it is divisible by the number (20) 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 2152305522440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2477208873600).

2152305522440 is an abundant number, since it is smaller than the sum of its proper divisors (2802112224760).

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

2152305522440 is a wasteful number, since it uses less digits than its factorization.

2152305522440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012654 (or 2012650 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 2152305522440 in words is "two trillion, one hundred fifty-two billion, three hundred five million, five hundred twenty-two thousand, four hundred forty".