2151601140 has 96 divisors (see below), whose sum is σ = 6547685760. Its totient is φ = 524745216.

The previous prime is 2151601139. The next prime is 2151601163. The reversal of 2151601140 is 411061512.

2151601140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 72367 + ... + 97673.

It is an arithmetic number, because the mean of its divisors is an integer number (68205060).

Almost surely, 2^2151601140 is an apocalyptic number.

2151601140 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 2151601140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3273842880).

2151601140 is an abundant number, since it is smaller than the sum of its proper divisors (4396084620).

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

2151601140 is a wasteful number, since it uses less digits than its factorization.

2151601140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25441 (or 25439 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 2151601140 is about 46385.3548008420. The cubic root of 2151601140 is about 1290.9831937257.

Adding to 2151601140 its reverse (411061512), we get a palindrome (2562662652).

The spelling of 2151601140 in words is "two billion, one hundred fifty-one million, six hundred one thousand, one hundred forty".