6109379781 has 16 divisors (see below), whose sum is σ = 8235950400. Its totient is φ = 4028087168.

The previous prime is 6109379767. The next prime is 6109379821. The reversal of 6109379781 is 1879739016.

It is a cyclic number.

It is not a de Polignac number, because 6109379781 - 2¹⁴ = 6109363397 is a prime.

It is a super-2 number, since 2×6109379781² = 74649042616983215922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6109375781) 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 15 ways as a sum of consecutive naturals, for example, 82930 + ... + 138188.

It is an arithmetic number, because the mean of its divisors is an integer number (514746900).

Almost surely, 2^6109379781 is an apocalyptic number.

It is an amenable number.

6109379781 is a deficient number, since it is larger than the sum of its proper divisors (2126570619).

6109379781 is a wasteful number, since it uses less digits than its factorization.

6109379781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55668.

The product of its (nonzero) digits is 571536, while the sum is 51.

The square root of 6109379781 is about 78162.5215880348. The cubic root of 6109379781 is about 1828.0961797628.

The spelling of 6109379781 in words is "six billion, one hundred nine million, three hundred seventy-nine thousand, seven hundred eighty-one".