2571666000 has 160 divisors (see below), whose sum is σ = 8448530688. Its totient is φ = 672755200.

The previous prime is 2571665989. The next prime is 2571666011. The reversal of 2571666000 is 6661752.

It is an interprime number because it is at equal distance from previous prime (2571665989) and next prime (2571666011).

It is a super-2 number, since 2×2571666000² = 13226932031112000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313957 + ... + 322043.

Almost surely, 2^2571666000 is an apocalyptic number.

2571666000 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 2571666000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4224265344).

2571666000 is an abundant number, since it is smaller than the sum of its proper divisors (5876864688).

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

2571666000 is a wasteful number, since it uses less digits than its factorization.

2571666000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8166 (or 8150 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 2571666000 is about 50711.5963069592. The cubic root of 2571666000 is about 1370.0555858598.

The spelling of 2571666000 in words is "two billion, five hundred seventy-one million, six hundred sixty-six thousand".