5461781871 has 32 divisors (see below), whose sum is σ = 9352627200. Its totient is φ = 2755678464.

The previous prime is 5461781867. The next prime is 5461781881. The reversal of 5461781871 is 1781871645.

It is not a de Polignac number, because 5461781871 - 2² = 5461781867 is a prime.

It is a super-2 number, since 2×5461781871² = 59662122412768521282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5461781871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5461781861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428646 + ... + 441203.

It is an arithmetic number, because the mean of its divisors is an integer number (292269600).

Almost surely, 2^5461781871 is an apocalyptic number.

5461781871 is a deficient number, since it is larger than the sum of its proper divisors (3890845329).

5461781871 is a wasteful number, since it uses less digits than its factorization.

5461781871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869895.

The product of its digits is 376320, while the sum is 48.

The square root of 5461781871 is about 73903.8691206354. The cubic root of 5461781871 is about 1761.0760756540.

The spelling of 5461781871 in words is "five billion, four hundred sixty-one million, seven hundred eighty-one thousand, eight hundred seventy-one".