2571867131856 has 160 divisors (see below), whose sum is σ = 7334994994560. Its totient is φ = 770011545600.

The previous prime is 2571867131851. The next prime is 2571867131857. The reversal of 2571867131856 is 6581317681752.

It is a super-2 number, since 2×2571867131856² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2571867131856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2571867131851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63936006 + ... + 63976218.

It is an arithmetic number, because the mean of its divisors is an integer number (45843718716).

Almost surely, 2^{2571867131856} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2571867131856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3667497497280).

2571867131856 is an abundant number, since it is smaller than the sum of its proper divisors (4763127862704).

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

2571867131856 is a wasteful number, since it uses less digits than its factorization.

2571867131856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41685 (or 41679 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 60.

The spelling of 2571867131856 in words is "two trillion, five hundred seventy-one billion, eight hundred sixty-seven million, one hundred thirty-one thousand, eight hundred fifty-six".