5771781860 has 96 divisors (see below), whose sum is σ = 13846412160. Its totient is φ = 2002065408.

The previous prime is 5771781857. The next prime is 5771781863. The reversal of 5771781860 is 681871775.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5771781857) and next prime (5771781863).

It is a junction number, because it is equal to n+sod(n) for n = 5771781799 and 5771781808.

It is not an unprimeable number, because it can be changed into a prime (5771781863) 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, 3654551 + ... + 3656129.

It is an arithmetic number, because the mean of its divisors is an integer number (144233460).

Almost surely, 2^5771781860 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 5771781860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6923206080).

5771781860 is an abundant number, since it is smaller than the sum of its proper divisors (8074630300).

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

5771781860 is a wasteful number, since it uses less digits than its factorization.

5771781860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445 (or 2443 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 50.

The square root of 5771781860 is about 75972.2440105595. The cubic root of 5771781860 is about 1793.7832718761.

The spelling of 5771781860 in words is "five billion, seven hundred seventy-one million, seven hundred eighty-one thousand, eight hundred sixty".