2151121760 has 48 divisors (see below), whose sum is σ = 5110484400. Its totient is φ = 855630336.

The previous prime is 2151121747. The next prime is 2151121783. The reversal of 2151121760 is 671211512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8915 + ... + 66194.

It is an arithmetic number, because the mean of its divisors is an integer number (106468425).

Almost surely, 2^2151121760 is an apocalyptic number.

2151121760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151121760 is an abundant number, since it is smaller than the sum of its proper divisors (2959362640).

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

2151121760 is a wasteful number, since it uses less digits than its factorization.

2151121760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75303 (or 75295 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 2151121760 is about 46380.1871492559. The cubic root of 2151121760 is about 1290.8873089326.

The spelling of 2151121760 in words is "two billion, one hundred fifty-one million, one hundred twenty-one thousand, seven hundred sixty".