2109140354386 has 16 divisors (see below), whose sum is σ = 3408101414424. Its totient is φ = 973155527424.

The previous prime is 2109140354371. The next prime is 2109140354413. The reversal of 2109140354386 is 6834530419012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2091983284161 + 17157070225 = 1446369^2 + 130985^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12156661 + ... + 12328936.

Almost surely, 2^{2109140354386} is an apocalyptic number.

2109140354386 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2109140354386 is a deficient number, since it is larger than the sum of its proper divisors (1298961060038).

2109140354386 is a wasteful number, since it uses less digits than its factorization.

2109140354386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24488925.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 2109140354386 in words is "two trillion, one hundred nine billion, one hundred forty million, three hundred fifty-four thousand, three hundred eighty-six".