2147845680 has 320 divisors, whose sum is σ = 7699507200. Its totient is φ = 549918720.

The previous prime is 2147845631. The next prime is 2147845691. The reversal of 2147845680 is 865487412.

2147845680 is a `hidden beast` number, since 2 + 1 + 4 + 7 + 84 + 568 + 0 = 666.

It is a super-2 number, since 2×2147845680² = 9226482130189324800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6996087 + ... + 6996393.

It is an arithmetic number, because the mean of its divisors is an integer number (24060960).

Almost surely, 2^2147845680 is an apocalyptic number.

2147845680 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 2147845680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3849753600).

2147845680 is an abundant number, since it is smaller than the sum of its proper divisors (5551661520).

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

2147845680 is a wasteful number, since it uses less digits than its factorization.

2147845680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 2147845680 is about 46344.8560252376. The cubic root of 2147845680 is about 1290.2316512058.

The spelling of 2147845680 in words is "two billion, one hundred forty-seven million, eight hundred forty-five thousand, six hundred eighty".