2197765580 has 48 divisors (see below), whose sum is σ = 4801356000. Its totient is φ = 844010496.

The previous prime is 2197765579. The next prime is 2197765597. The reversal of 2197765580 is 855677912.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93236 + ... + 114404.

It is an arithmetic number, because the mean of its divisors is an integer number (100028250).

Almost surely, 2^2197765580 is an apocalyptic number.

2197765580 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 2197765580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2400678000).

2197765580 is an abundant number, since it is smaller than the sum of its proper divisors (2603590420).

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

2197765580 is a wasteful number, since it uses less digits than its factorization.

2197765580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21386 (or 21384 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 50.

The square root of 2197765580 is about 46880.3325500150. The cubic root of 2197765580 is about 1300.1509844361.

The spelling of 2197765580 in words is "two billion, one hundred ninety-seven million, seven hundred sixty-five thousand, five hundred eighty".