5667201781 has 4 divisors (see below), whose sum is σ = 5682155200. Its totient is φ = 5652248364.

The previous prime is 5667201731. The next prime is 5667201811. The reversal of 5667201781 is 1871027665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5667201781 - 2⁷ = 5667201653 is a prime.

It is a super-2 number, since 2×5667201781² = 64234352053139143922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5667201731) 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 3 ways as a sum of consecutive naturals, for example, 7476141 + ... + 7476898.

It is an arithmetic number, because the mean of its divisors is an integer number (1420538800).

Almost surely, 2^5667201781 is an apocalyptic number.

It is an amenable number.

5667201781 is a deficient number, since it is larger than the sum of its proper divisors (14953419).

5667201781 is a wasteful number, since it uses less digits than its factorization.

5667201781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14953418.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 5667201781 is about 75280.8194761454. The cubic root of 5667201781 is about 1782.8831972541.

The spelling of 5667201781 in words is "five billion, six hundred sixty-seven million, two hundred one thousand, seven hundred eighty-one".