2571366140 has 144 divisors (see below), whose sum is σ = 6655128480. Its totient is φ = 829785600.

The previous prime is 2571366137. The next prime is 2571366157. The reversal of 2571366140 is 416631752.

It is a super-2 number, since 2×2571366140² = 13223847651876999200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2571366140.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 3667790 + ... + 3668490.

It is an arithmetic number, because the mean of its divisors is an integer number (46216170).

Almost surely, 2^2571366140 is an apocalyptic number.

2571366140 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 2571366140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3327564240).

2571366140 is an abundant number, since it is smaller than the sum of its proper divisors (4083762340).

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

2571366140 is a wasteful number, since it uses less digits than its factorization.

2571366140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 2571366140 is about 50708.6396977872. The cubic root of 2571366140 is about 1370.0023336313.

Adding to 2571366140 its reverse (416631752), we get a palindrome (2987997892).

The spelling of 2571366140 in words is "two billion, five hundred seventy-one million, three hundred sixty-six thousand, one hundred forty".