5781661875 has 80 divisors (see below), whose sum is σ = 11676762240. Its totient is φ = 2803140000.

The previous prime is 5781661859. The next prime is 5781661883.

5781661875 is a `hidden beast` number, since 5 + 7 + 8 + 16 + 618 + 7 + 5 = 666.

5781661875 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5781661875 - 2⁴ = 5781661859 is a prime.

It is a super-2 number, since 2×5781661875² = 66855228073657031250, 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 79 ways as a sum of consecutive naturals, for example, 170052 + ... + 201198.

It is an arithmetic number, because the mean of its divisors is an integer number (145959528).

Almost surely, 2^5781661875 is an apocalyptic number.

5781661875 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5781661875 is an abundant number, since it is smaller than the sum of its proper divisors (5895100365).

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

5781661875 is a wasteful number, since it uses less digits than its factorization.

5781661875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31187 (or 31166 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 54.

The square root of 5781661875 is about 76037.2400538052. The cubic root of 5781661875 is about 1794.8062085979.

The spelling of 5781661875 in words is "five billion, seven hundred eighty-one million, six hundred sixty-one thousand, eight hundred seventy-five".