2116571011739 has 4 divisors (see below), whose sum is σ = 2116573957056. Its totient is φ = 2116568066424.

The previous prime is 2116571011727. The next prime is 2116571011741. The reversal of 2116571011739 is 9371101756112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2116571011739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2116571011739.

It is not an unprimeable number, because it can be changed into a prime (2116571011799) 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, 393782 + ... + 2094804.

It is an arithmetic number, because the mean of its divisors is an integer number (529143489264).

Almost surely, 2^{2116571011739} is an apocalyptic number.

2116571011739 is a deficient number, since it is larger than the sum of its proper divisors (2945317).

2116571011739 is a wasteful number, since it uses less digits than its factorization.

2116571011739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945316.

The product of its (nonzero) digits is 79380, while the sum is 44.

The spelling of 2116571011739 in words is "two trillion, one hundred sixteen billion, five hundred seventy-one million, eleven thousand, seven hundred thirty-nine".