6391094309138 has 16 divisors (see below), whose sum is σ = 11952176370624. Its totient is φ = 2490036743760.

The previous prime is 6391094309137. The next prime is 6391094309141. The reversal of 6391094309138 is 8319034901936.

It is a super-2 number, since 2×6391094309138² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6391094309137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20750306045 + ... + 20750306352.

It is an arithmetic number, because the mean of its divisors is an integer number (747011023164).

Almost surely, 2^{6391094309138} is an apocalyptic number.

6391094309138 is a deficient number, since it is larger than the sum of its proper divisors (5561082061486).

6391094309138 is a wasteful number, since it uses less digits than its factorization.

6391094309138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41500612417.

The product of its (nonzero) digits is 3779136, while the sum is 56.

The spelling of 6391094309138 in words is "six trillion, three hundred ninety-one billion, ninety-four million, three hundred nine thousand, one hundred thirty-eight".