2157151760 has 80 divisors (see below), whose sum is σ = 5434045056. Its totient is φ = 793196544.

The previous prime is 2157151753. The next prime is 2157151783. The reversal of 2157151760 is 671517512.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 2157151760.

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, 40037 + ... + 76923.

Almost surely, 2^2157151760 is an apocalyptic number.

2157151760 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 2157151760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2717022528).

2157151760 is an abundant number, since it is smaller than the sum of its proper divisors (3276893296).

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

2157151760 is a wasteful number, since it uses less digits than its factorization.

2157151760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36960 (or 36954 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 35.

The square root of 2157151760 is about 46445.1478628285. The cubic root of 2157151760 is about 1292.0923838128.

The spelling of 2157151760 in words is "two billion, one hundred fifty-seven million, one hundred fifty-one thousand, seven hundred sixty".