2571981480 has 96 divisors (see below), whose sum is σ = 8366211360. Its totient is φ = 685265280.

The previous prime is 2571981469. The next prime is 2571981487. The reversal of 2571981480 is 841891752.

2571981480 is a `hidden beast` number, since 25 + 71 + 9 + 81 + 480 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (2571981487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 545935 + ... + 550625.

It is an arithmetic number, because the mean of its divisors is an integer number (87148035).

Almost surely, 2^2571981480 is an apocalyptic number.

2571981480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2571981480 is an abundant number, since it is smaller than the sum of its proper divisors (5794229880).

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

2571981480 is a wasteful number, since it uses less digits than its factorization.

2571981480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6231 (or 6224 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 2571981480 is about 50714.7067427191. The cubic root of 2571981480 is about 1370.1116075805. Note that the first 3 decimals are identical.

The spelling of 2571981480 in words is "two billion, five hundred seventy-one million, nine hundred eighty-one thousand, four hundred eighty".