2109947767199 has 4 divisors (see below), whose sum is σ = 2144537074920. Its totient is φ = 2075358459480.

The previous prime is 2109947767157. The next prime is 2109947767219. The reversal of 2109947767199 is 9917677499012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2109947767199 - 2⁸ = 2109947766943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109947767999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17294653769 + ... + 17294653890.

It is an arithmetic number, because the mean of its divisors is an integer number (536134268730).

Almost surely, 2^{2109947767199} is an apocalyptic number.

2109947767199 is a deficient number, since it is larger than the sum of its proper divisors (34589307721).

2109947767199 is an equidigital number, since it uses as much as digits as its factorization.

2109947767199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34589307720.

The product of its (nonzero) digits is 108020304, while the sum is 71.

The spelling of 2109947767199 in words is "two trillion, one hundred nine billion, nine hundred forty-seven million, seven hundred sixty-seven thousand, one hundred ninety-nine".